| 'ohi'a lehua |
Metrosideros polymorpha |
1 |
| 2,4-D |
|
1 |
| a li shan e er li |
Carpinus kawakamii |
6 |
| Acantholyda sawflies |
Acantholyda spp. |
1 |
| acorn and nut weevils |
Curculio spp. |
1 |
| African tuliptree |
Spathodea campanulata |
1 |
| ailanthus |
Ailanthus spp. |
1 |
| air pollutants |
|
1 |
| Alaska-cedar |
Chamaecyparis nootkatensis |
4 |
| albizia |
Albizia spp. |
1 |
| alder |
Alnus formosana |
1 |
| alder lace bug |
Corythucha pergandei |
2 |
| Allegheny serviceberry |
Amelanchier laevis |
7 |
| alligator juniper |
Juniperus deppeana |
1 |
| alternateleaf dogwood |
Cornus alternifolia |
7 |
| amberique-bean |
Strophostyles helvola |
1 |
| American basswood |
Tilia americana |
3 |
| American beech |
Fagus grandifolia |
8 |
| American chestnut |
Castanea dentata |
5 |
| American cranberrybush |
Viburnum opulus var. americanum |
1 |
| American elm |
Ulmus americana |
24 |
| American germander |
Teucrium canadense |
1 |
| American hawthorn rust |
Gymnosporangium globosum |
1 |
| American hazelnut |
Corylus americana |
3 |
| American holly |
Ilex opaca |
10 |
| American hornbeam |
Carpinus caroliniana |
16 |
| American oil palm |
Attalea butyracea |
3 |
| American plum |
Prunus americana |
7 |
| American plum borer |
Euzophera semifuneralis |
1 |
| American smoketree |
Cotinus obovatus |
7 |
| American sycamore |
Platanus occidentalis |
26 |
| Amur corktree |
Phellodendron amurense |
3 |
| Amur maple |
Acer ginnala |
17 |
| Amur maple |
Acer japonicum |
8 |
| angulose prominent |
Peridea angulosa |
1 |
| annosum root disease |
Heterobasidion annosum |
6 |
| anthracnose |
Apiognomonia spp. |
5 |
| anthracnose |
Colletotrichum spp. |
11 |
| anthracnose |
Discula spp. |
2 |
| ants |
|
2 |
| aphid |
Greenidea ficicola |
3 |
| aphid |
Tetraneura spp. |
3 |
| aphids |
Aphis spp. |
1 |
| aphids |
|
5 |
| apple |
Malus domestica |
3 |
| apple aphid |
Aphis pomi |
2 |
| apple flea beetle |
Altica foliaceae |
2 |
| apple maggot |
Rhagoletis pomonella |
1 |
| apple scab |
Venturia inaequalis |
15 |
| apple serviceberry |
Amelanchier x grandiflora |
8 |
| apple variegated Tortrix |
Archips xylosteana |
3 |
| apricot |
Prunus armeniaca |
4 |
| arborvitae leafminer |
Argyresthia thuiella |
3 |
| Arizona walnut |
Juglans major |
6 |
| Armillaria root rot |
Armillaria tabescens |
6 |
| Armillaria root rots |
Armillaria spp. |
3 |
| artist's conk |
Ganoderma applanatum |
3 |
| Ascochyta fungi |
Ascochyta spp. |
11 |
| ash |
Fraxinus spp. |
1 |
| ash anthracnose |
Gnomoniella fraxini |
2 |
| ash bead gall mite |
Aceria fraxini |
2 |
| ash borer |
Podosesia syringae |
4 |
| ash flower gall mite |
Eriophyes fraxiniflora |
7 |
| ash heart rot |
Perenniporia fraxinophila |
7 |
| ash midribgall midge |
Contarinia canadensis |
1 |
| ash root rot |
Scytinostroma galactinum |
1 |
| ash rusts |
Puccinia sparganioides |
4 |
| ash weevil |
Stereonychus fraxini |
6 |
| ash yellows phytoplasma |
Candidatus Phytoplasma fraxini |
9 |
| Asian chestnut gall wasp |
Dryocosmus kuriphilus |
19 |
| Asian longhorned beetle |
Anoplophora glabripennis |
135 |
| Asian white birch |
Betula platyphylla |
4 |
| aspen leafminer |
Phyllocnistis populiella |
1 |
| aspen/poplar |
Populus spp. |
2 |
| assassin bug |
Zelus exsanguis |
1 |
| Atlantic white cedar |
Chamaecyparis thyoides |
6 |
| Atlas cedar |
Cedrus atlantica |
21 |
| Atropellis canker |
Atropellis pinicola |
1 |
| Austrian pine |
Pinus nigra |
5 |
| autumn zephyrlily |
Zephyranthes candida |
1 |
| baccharis |
Baccharis spp. |
1 |
| bacterial blight |
Pseudomonas syringae pv. mori |
1 |
| bacterial leaf scorch |
Xylella fastidiosa |
15 |
| bacterial leaf spot |
Pseudomonas syringae |
1 |
| bacterial wetwood |
Enterobacter nimipressuralis |
8 |
| bagworm |
Thyridopteryx ephemeraeformis |
3 |
| bagworms |
|
6 |
| baldcypress |
Taxodium distichum |
4 |
| balsam gall midge |
Paradiplosis tumifex |
1 |
| balsam twig aphid |
Mindarus abietinus |
3 |
| balsam woolly adelgid |
Adelges piceae |
2 |
| banded ash borer |
Neoclytus caprea |
5 |
| banded elm bark beetle |
Scolytus schevyrewi |
9 |
| banded hickory borer |
Knulliana cincta |
6 |
| bark beetles |
|
1 |
| bark beetles |
Pityogenes spp. |
2 |
| bark lice (Family Psocidae) |
|
1 |
| basal wound |
|
1 |
| basswood leafroller |
Pantographa limata |
3 |
| beech |
Fagus spp. |
1 |
| beech bark beetle |
Taphrorychus bicolor |
8 |
| beech bark disease |
Nectria coccinea |
1 |
| beech erineum mite |
Acalitus fagerinea |
2 |
| beech weevil |
Orchestes fagi |
1 |
| beefsteak fungus |
Fistulina hepatica |
1 |
| Bhutan pine |
Pinus wallichiana |
2 |
| bicycle |
|
1 |
| bigflower pawpaw |
Asimina obovata |
4 |
| bigleaf maple |
Acer macrophyllum |
2 |
| bigtooth aspen |
Populus grandidentata |
2 |
| billbugs |
Sphenophorus spp. |
1 |
| birch |
Betula celtiberica |
2 |
| birch |
Betula raddeana |
1 |
| birch |
Betula spp. |
4 |
| birch conk |
Piptoporus betulinus |
4 |
| birch lace bug |
Corythucha pallipes |
4 |
| birch leaffolder |
Ancylis discigerana |
3 |
| birch leafminer |
Fenusa pusilla |
12 |
| birch skeletonizer |
Bucculatrix canadensisella |
1 |
| bird-cherry ermine |
Yponomeuta evonymella |
2 |
| Bismarck palm |
Bismarckia nobilis |
4 |
| bitter rot and anthracnose |
Colletotrichum gloeosporioides |
3 |
| bitternut hickory |
Carya cordiformis |
3 |
| black ash decline |
|
7 |
| black cherry |
Prunus serotina |
6 |
| black cherry aphid |
Myzus cerasi |
3 |
| black knot |
Apiosporina morbosa |
6 |
| black locust |
Robinia pseudoacacia |
18 |
| black maple |
Acer nigrum |
4 |
| black maple |
Acer saccharum ssp. nigrum |
1 |
| black oak |
Quercus velutina |
4 |
| black pecan aphid |
Melanocallis caryaefoliae |
4 |
| black pine |
Pinus nigra ssp. nigra |
3 |
| black pineleaf scale |
Dynaspidiotus californica |
1 |
| black poui |
Jacaranda mimosifolia |
3 |
| black scale |
Saissetia oleae |
4 |
| black spruce borer |
Asemum striatum |
1 |
| black stem borer |
Xylosandrus germanus |
1 |
| black stem, stalk rot |
Thielaviopsis spp. |
3 |
| black turpentine beetle |
Dendroctonus terebrans |
13 |
| black twig borer |
Xylosandrus compactus |
1 |
| black walnut |
Juglans nigra |
5 |
| black willow |
Salix nigra |
1 |
| blackgum |
Nyssa sylvatica |
6 |
| blackhaw viburnum |
Viburnum prunifolium |
2 |
| blackheaded ash sawfly |
Tethida barda |
2 |
| blackmargined aphid |
Monellia caryella |
6 |
| bloodtwig dogwood |
Cornus sanguinea |
10 |
| blue ash |
Fraxinus quadrangulata |
8 |
| blue fan palm |
Brahea armata |
1 |
| blue horntail woodwasp |
Sirex cyaneus |
4 |
| blue spruce |
Picea pungens |
3 |
| blue stain |
Ophiostoma huntii |
1 |
| blue-mist shrub |
Caryopteris x clandonensis |
1 |
| Blumeriella leaf spot of cherry and plum |
Blumeriella jaapii |
5 |
| Botryosphaeria canker |
Botryosphaeria dothidea |
7 |
| Botryosphaeria canker |
Botryosphaeria rhodina |
1 |
| Botryosphaeria canker |
Botryosphaeria ribis |
1 |
| Botryosphaeria rots and cankers |
Botryosphaeria spp. |
9 |
| bottle-palm |
Beaucarnea spp. |
1 |
| bottlebrush |
Callistemon viminalis |
3 |
| bottlebrush buckeye |
Aesculus parviflora |
17 |
| boxelder |
Acer negundo |
10 |
| boxelder bug |
Boisea trivittata |
9 |
| boxelder gall midge |
Contarinia negundinis |
3 |
| Boxelder pouchgall mite |
Eriophyes negundi |
3 |
| boxwood |
Buxus spp. |
1 |
| boxwood leafminer |
Monarthropalpus flavus |
8 |
| brachychiton |
Brachychiton spp. |
1 |
| Braconid wasp |
Atanycolus cappaerti |
4 |
| branch pruner |
Psyrassa unicolor |
3 |
| Brazilian peppertree |
Schinus terebinthifolius |
7 |
| bristlecone pine |
Pinus aristata |
2 |
| bronze birch borer |
Agrilus anxius |
3 |
| brown felt blight of pines |
Neopeckia coulteri |
4 |
| brown root rot |
Phellinus noxius |
3 |
| brown spot needle blight of pine |
Mycosphaerella dearnessii |
7 |
| browntail moth |
Euproctis chrysorrhoea |
1 |
| buckeye |
Aesculus spp. |
4 |
| buckthorn bumelia |
Sideroxylon lycioides |
1 |
| buckwheat tree |
Cliftonia monophylla |
1 |
| buff-tip moth |
Phalera bucephala |
1 |
| buko |
Gnetum gnemon |
3 |
| bumelias buckthorn |
Bumelia spp. |
3 |
| Bunge's pine |
Pinus bungeana |
4 |
| bunya pine |
Araucaria bidwillii |
1 |
| bur oak |
Quercus macrocarpa |
9 |
| burl and decay |
|
1 |
| burr knot |
|
2 |
| butterflies, moths or skippers |
Lepidoptera (Order) |
3 |
| butterfly tree |
Bauhinia purpurea |
1 |
| butternut |
Juglans cinerea |
7 |
| butternut canker |
Sirococcus clavigignenti-juglandacearum |
7 |
| buttonbush |
Adina rubella |
1 |
| calico scale |
Eulecanium cerasorum |
4 |
| California buckeye |
Aesculus californica |
13 |
| California fan palm |
Washingtonia filifera |
1 |
| California pear sawfly |
Pristiphora abbreviata |
6 |
| Callery pear (Bradford pear) |
Pyrus calleryana |
48 |
| camellia |
Camellia japonica |
2 |
| Canadian serviceberry |
Amelanchier canadensis |
5 |
| Canary Island date palm |
Phoenix canariensis |
2 |
| canker |
|
1 |
| canker and die back of Siberian Elm |
Tubercularia ulmea |
1 |
| carbon balls |
Daldinia concentrica |
2 |
| Carolina laurelcherry |
Prunus caroliniana |
13 |
| Carolina silverbell |
Halesia carolina |
3 |
| casebearer moths |
Coleophora spp. |
5 |
| cassia |
Cassia leptophylla |
2 |
| cat-faced spider |
Araneus gemmoides |
1 |
| catalpa |
Catalpa spp. |
2 |
| catalpa sphinx |
Ceratomia catalpae |
31 |
| Catawba rosebay |
Rhododendron catawbiense |
4 |
| Caucasian fir |
Abies nordmanniana |
1 |
| cecropia moth |
Hyalophora cecropia |
1 |
| cedar |
Cedrus spp. |
1 |
| cedar |
Chamaecyparis spp. |
2 |
| cedar bark beetles |
Phloeosinus spp. |
1 |
| cedar-apple rust |
Gymnosporangium juniperi-virginianae |
7 |
| cedar-of-lebanon |
Cedrus libani |
4 |
| Cenangium canker |
Cenangium singulare |
1 |
| Ceratocystis canker - stain of sycamore |
Ceratocystis fimbriata f.sp. platani |
3 |
| Ceratocystis wilts |
Ceratocystis spp. |
1 |
| Cercospora fungi |
Cercospora spp. |
5 |
| Cercospora fungus |
Cercospora cercidicola |
1 |
| Cercospora fungus |
Cercospora destructiva |
1 |
| chalk maple |
Acer leucoderme |
18 |
| charcoal rot |
Macrophomina phaseolina |
1 |
| checkered beetle |
|
5 |
| checkered beetles |
Enoclerus spp. |
1 |
| chemicals |
|
4 |
| cherry birch |
Betula lenta |
10 |
| cherry plum |
Prunus cerasifera |
3 |
| cherry scallop shell moth |
Rheumaptera prunivorata |
1 |
| chestnut |
Castanea spp. |
3 |
| chestnut blight or canker |
Cryphonectria parasitica |
4 |
| Chickasaw plum |
Prunus angustifolia |
8 |
| chilli thrips |
Scirtothrips dorsalis |
1 |
| chinese alangium |
Alangium chinense |
1 |
| Chinese catalpa |
Catalpa ovata |
1 |
| Chinese chestnut |
Castanea mollissima |
2 |
| Chinese elm |
Ulmus parvifolia |
6 |
| Chinese fir |
Cunninghamia lanceolata |
1 |
| Chinese fringetree |
Chionanthus retusus |
21 |
| Chinese holly |
Ilex cornuta |
27 |
| Chinese juniper |
Juniperus chinensis |
1 |
| chinese redbud |
Cercis chinensis |
7 |
| Chinese tallowtree |
Triadica sebifera |
1 |
| chinkapin |
Castanea pumila |
6 |
| chinkapin oak |
Quercus muehlenbergii |
11 |
| chinquapin |
Castanopsis cuspidata |
2 |
| chinquapin |
Castanopsis sclerophylla |
8 |
| chinquapin |
Castanopsis spp. |
1 |
| chitalpa |
x Chitalpa tashkentensis |
3 |
| cicada killer |
Sphecius speciosus |
1 |
| cicadas |
|
2 |
| citrus longhorned beetle |
Anoplophora chinensis |
13 |
| clomazone |
|
1 |
| cloudless sulphur |
Phoebis sennae |
2 |
| cockspur hawthorn |
Crataegus crus-galli |
3 |
| coconut palm |
Cocos nucifera |
4 |
| cogongrass |
Imperata cylindrica |
4 |
| cold injury (low temperature) |
|
7 |
| common chokecherry |
Prunus virginiana |
3 |
| common elderberry |
Sambucus nigra |
2 |
| common elderberry |
Sambucus nigra ssp. canadensis |
3 |
| common hackberry |
Celtis occidentalis |
13 |
| common horse chestnut |
Aesculus hippocastanum |
7 |
| common lilac |
Syringa vulgaris |
2 |
| common ninebark |
Physocarpus opulifolius |
2 |
| common pearlbrush |
Exochorda racemosa |
2 |
| common sawfly |
Apethymus filiformis |
3 |
| common sawfly |
|
7 |
| common sawfly |
Periclista lineolata |
1 |
| Compton's oak |
Quercus x comptoniae |
12 |
| Comstock mealybug |
Pseudococcus comstocki |
2 |
| conifer sawfly |
Diprion pini |
11 |
| conifer sawfly |
Gilpinia frutetorum |
1 |
| construction |
|
7 |
| containers |
|
1 |
| convergent lady beetle |
Hippodamia convergens |
1 |
| cooley spruce gall adelgid |
Adelges cooleyi |
10 |
| cork oak |
Quercus suber |
10 |
| corkscrew willow |
Salix matsudana |
3 |
| corktree |
Phellodendron spp. |
2 |
| Cornelian cherry dogwood |
Cornus mas |
5 |
| Cory's mistletoe |
Phoradendron coryae |
3 |
| cotton square borer |
Strymon melinus |
1 |
| cottonwood borer |
Plectrodera scalator |
1 |
| cottony camellia scale |
Pulvinaria floccifera |
2 |
| cottony maple scale |
Pulvinaria innumerabilis |
3 |
| crabapple and apple |
Malus spp. |
7 |
| crack willow |
Salix fragilis |
2 |
| cracks or splits |
|
1 |
| crapemyrtle |
Lagerstroemia indica |
36 |
| crapemyrtle aphid |
Sarucallis kahawaluokalani |
7 |
| Crimean linden |
Tilia x euchlora |
1 |
| crimson bottlebrush |
Callistemon citrinus |
1 |
| crown gall |
Rhizobium radiobacter |
9 |
| crown rust |
Puccinia coronata |
1 |
| crybabytree |
Erythrina crista-galli |
1 |
| cryptomeria scale |
Aspidiotus cryptomeriae |
1 |
| Cryptosphaeria canker |
Cryptosphaeria ligniota |
1 |
| cucumber-tree |
Magnolia acuminata |
2 |
| cui bai |
Calocedrus macrolepis |
8 |
| currant borer |
Synanthedon tipuliformis |
1 |
| Cyclaneusma needle cast |
Cyclaneusma minus |
8 |
| Cylindrocarpon fungi |
Cylindrocarpon spp. |
7 |
| Cylindrocladium blight and root rot |
Cylindrocladium scoparium |
18 |
| Cylindrocladium fungus |
Cylindrocladium ellipticum |
2 |
| Cylindrocladium root diseases |
Cylindrocladium spp. |
4 |
| Cynipid gall wasp |
|
3 |
| Cynipid gall wasp |
Neuroterus quercusbaccarum |
3 |
| cypress pine |
Callitris rhomboidea |
2 |
| cypress twig gall midge |
Taxodiomyia cupressiananassa |
2 |
| Cytospora cankers |
Cytospora spp. |
13 |
| Dahurian birch |
Betula dahurica |
2 |
| dammar pine |
Agathis dammara |
2 |
| dawn redwood |
Metasequoia glyptostroboides |
15 |
| decay |
|
2 |
| deer |
|
2 |
| defoliation due to unknown cause |
|
2 |
| Deodar cedar |
Cedrus deodara |
26 |
| desert ironwood |
Olneya tesota |
2 |
| devil's gut |
Cassytha filiformis |
4 |
| devil's walkingstick |
Aralia spinosa |
11 |
| devilwood |
Osmanthus americanus |
9 |
| diagnostic lab sample |
|
3 |
| dieback |
|
4 |
| Diplodia blight |
Sphaeropsis sapinea |
44 |
| dodder |
Cuscuta spp. |
1 |
| dog-day cicada |
Tibicen spp. |
6 |
| dogwood |
Cornus spp. |
4 |
| dogwood anthracnose |
Discula destructiva |
33 |
| dogwood borer |
Synanthedon scitula |
3 |
| dogwood sawfly |
Macremphytus tarsatus |
6 |
| dogwood twig borer |
Oberea tripunctata |
27 |
| Dothichiza canker |
Dothichiza populea |
1 |
| dothichiza canker of poplar |
Cryptodiaporthe populea |
2 |
| Dothistroma needle blight |
Mycosphaerella pini |
1 |
| double-banded ant-minicing bycid |
Euderces pini |
2 |
| Douglas-fir |
Pseudotsuga menziesii |
2 |
| downy birch |
Betula pubescens |
1 |
| downy hawthorn |
Crataegus mollis |
4 |
| downy mildew |
Plasmopara cercidis |
5 |
| downy oak |
Quercus pubescens |
3 |
| downy serviceberry |
Amelanchier arborea var. austromontana |
1 |
| downy spot |
Microstroma juglandis |
1 |
| dracaena |
Dracaena spp. |
1 |
| dragontree |
Dracaena draco |
1 |
| dragontree |
Dracaena marginata |
4 |
| drainage |
|
1 |
| drippy blight |
Lonsdalea quercina |
8 |
| drought |
|
11 |
| Dutch elm disease |
Ophiostoma ulmi |
51 |
| Dutch elm disease (novi-ulmi) |
Ophiostoma novo-ulmi |
5 |
| dwarf hackberry |
Celtis tenuifolia |
3 |
| eastern arborvitae |
Thuja occidentalis |
4 |
| eastern ash bark beetle |
Hylesinus aculeatus |
3 |
| eastern cottonwood |
Populus deltoides ssp. deltoides |
1 |
| eastern dwarf mistletoe |
Arceuthobium pusillum |
1 |
| Eastern filbert blight |
Anisogramma anomala |
10 |
| eastern fivespined ips |
Ips grandicollis |
16 |
| eastern hemlock |
Tsuga canadensis |
7 |
| Eastern Nycteoline |
Nycteola asiatica |
12 |
| eastern pine gall rust |
Cronartium quercuum |
1 |
| eastern pine seedworm |
Cydia toreuta |
1 |
| eastern pine weevil |
Pissodes nemorensis |
33 |
| eastern redbud |
Cercis canadensis |
117 |
| eastern redcedar |
Juniperus virginiana |
7 |
| eastern subterranean termite |
Reticulitermes flavipes |
2 |
| eastern sweetshrub |
Calycanthus floridus |
2 |
| eastern tent caterpillar |
Malacosoma americanum |
7 |
| eastern white pine |
Pinus strobus |
9 |
| ectomycorrhizae |
Pisolithus tinctorius |
4 |
| elder borer |
Desmocerus palliatus |
2 |
| elegant maple |
Acer elegantulum |
14 |
| elm |
Ulmus spp. |
1 |
| elm cockscombgall aphid |
Colopha ulmicola |
7 |
| elm flea beetle |
Altica carinata |
1 |
| elm flea beetle |
Altica ulmi |
2 |
| elm lace bug |
Corythucha ulmi |
2 |
| elm leaf beetle |
Xanthogaleruca luteola |
8 |
| elm leafminer |
Kaliofenusa ulmi |
18 |
| elm sawfly |
Cimbex americana |
1 |
| elm spanworm |
Ennomos subsignaria |
2 |
| Elm yellows |
Phytoplasma |
2 |
| elongate hemlock scale |
Fiorinia externa |
3 |
| emerald ash borer |
Agrilus planipennis |
55 |
| Engelmann spruce |
Picea engelmannii |
2 |
| English boxwood |
Buxus sempervirens |
1 |
| English elm |
Ulmus procera |
3 |
| English hawthorn |
Crataegus monogyna |
4 |
| English oak |
Quercus robur |
12 |
| Entomosporium fungus |
Entomosporium spp. |
7 |
| Entomosporium leaf spot |
Diplocarpon mespili |
8 |
| epicormic branch |
|
1 |
| Eriophyid mite |
Aceria macrotricha |
1 |
| Eriophyid mite |
|
7 |
| Eriophyid mites |
Eriophyes spp. |
1 |
| erythrina |
Erythrina spp. |
1 |
| erythrina gall wasp |
Quadrastichus erythrinae |
14 |
| eucalyptus weevil |
Gonipterus scutellatus |
3 |
| euonymus caterpillar |
Yponomeuta cagnagella |
1 |
| euonymus scale |
Unaspis euonymi |
7 |
| European alder |
Alnus glutinosa |
7 |
| European apple sawfly |
Hoplocampa testudinea |
1 |
| European ash |
Fraxinus excelsior |
6 |
| European beech |
Fagus sylvatica |
19 |
| European bird cherry |
Prunus padus |
4 |
| European buckthorn |
Rhamnus cathartica |
7 |
| European chafer |
Amphimallon majale |
4 |
| European crabapple |
Malus sylvestris |
7 |
| European cranberrybush |
Viburnum opulus var. opulus |
1 |
| European elm flea weevil |
Orchestes alni |
9 |
| European elm scale |
Eriococcus spuria |
2 |
| European elm scale |
Gossyparia spuria |
13 |
| European fan palm |
Chamaerops humilis |
2 |
| European fruit lecanium |
Parthenolecanium corni |
9 |
| European hornbeam |
Carpinus betulus |
13 |
| European larch |
Larix decidua |
1 |
| European mountain-ash |
Sorbus aucuparia |
5 |
| European pine sawfly |
Neodiprion sertifer |
7 |
| European smoketree |
Cotinus coggygria |
2 |
| European spindletree |
Euonymus europaeus |
2 |
| European spruce bark beetle |
Ips typographus |
2 |
| European turkey oak |
Quercus cerris |
1 |
| European white birch |
Betula pendula |
25 |
| Eutypella canker |
Eutypella parasitica |
16 |
| exhaust |
|
1 |
| fairy rings |
|
1 |
| fall webworm |
Hyphantria cunea |
16 |
| false armored scale |
Conchaspis cordiae |
16 |
| false tinder polypore |
Phellinus igniarius |
3 |
| Father David's maple |
Acer davidii |
6 |
| feathered thorn |
Colotois pennaria |
2 |
| felling |
|
1 |
| fertilization |
|
1 |
| field maple bark gall mite |
Aceria heteronyx |
8 |
| fir broom rust |
Melampsorella caryophyllacearum |
2 |
| fire |
|
1 |
| fire blight |
Erwinia amylovora |
23 |
| flatheaded appletree borer |
Chrysobothris femorata |
5 |
| flatheaded borer |
Poecilonota thureura |
3 |
| flatheaded or metallic wood borer |
|
3 |
| flea beetle |
Altica ignita |
5 |
| fletcher scale |
Parthenolecanium fletcheri |
5 |
| flooding/high water |
|
1 |
| Florida hobblebush |
Agarista populifolia |
2 |
| Florida wax scale |
Ceroplastes floridensis |
31 |
| flowering ash |
Fraxinus ornus |
2 |
| flowering dogwood |
Cornus florida |
53 |
| forest tent caterpillar |
Malacosoma disstria |
7 |
| formosan cypress |
Chamaecyparis formosensis |
1 |
| formosan hinoki |
Chamaecyparis obtusa var. formosana |
1 |
| fourlined plant bug |
Poecilocapsus lineatus |
1 |
| fox squirrel |
Sciurus niger |
6 |
| fragrant dracaena |
Dracaena fragrans |
1 |
| fragrant sumac |
Rhus aromatica |
3 |
| Fraser fir |
Abies fraseri |
1 |
| Freeman maple |
Acer x freemanii |
20 |
| fringed wattle |
Acacia fimbriata |
4 |
| frost and winter injury (general) |
|
23 |
| Fusarium damping-off |
Fusarium solani |
1 |
| Fusarium root rot and wilt |
Fusarium oxysporum |
3 |
| fusiform rust |
Cronartium quercuum f.sp. fusiforme |
4 |
| gall midge |
Dryomia circinnans |
1 |
| gall midge |
Janetia cerris |
1 |
| gall midge |
Obolodiplosis robiniae |
4 |
| gall rust of jack pine |
Cronartium quercuum f.sp. banksianae |
1 |
| Gambel oak |
Quercus gambelii |
1 |
| Ganoderma butt rot of palm |
Ganoderma zonatum |
1 |
| Ganoderma root and butt rot |
Ganoderma australe |
1 |
| Ganoderma root and butt rot |
Ganoderma lucidum |
10 |
| gardens |
|
2 |
| genetic abnormalities |
|
1 |
| Geometrid moth |
Agriopis marginaria |
5 |
| Geometrid moth |
|
1 |
| giant bark aphid |
Longistigma caryae |
2 |
| giant root borers |
Prionus spp. |
5 |
| giant sequoia |
Sequoiadendron giganteum |
1 |
| giant willow aphid |
Tuberolachnus salignus |
6 |
| Gibberella canker |
Gibberella baccata |
2 |
| ginkgo |
Ginkgo biloba |
23 |
| glyphosate |
|
1 |
| goat willow |
Salix caprea |
2 |
| Gold pit oak splendour beetle |
Chrysobothris affinis |
1 |
| goldenrain tree |
Koelreuteria bipinnata |
9 |
| goldenrain tree |
Koelreuteria paniculata |
3 |
| goldspotted oak borer |
Agrilus coxalis auroguttatus |
3 |
| gouty oak gall |
Callirhytis quercuspunctata |
1 |
| granulate ambrosia beetle |
Xylosandrus crassiusculus |
9 |
| green ash |
Fraxinus pennsylvanica |
16 |
| green scale |
Coccus viridis |
1 |
| greenstriped mapleworm |
Dryocampa rubicunda |
6 |
| Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
15 |
| gulf fritillary |
Agraulis vanillae |
12 |
| Gynosporanium rusts |
Gymnosporangium spp. |
4 |
| gypsy moth |
Lymantria dispar |
72 |
| hackberry |
Celtis spp. |
1 |
| hackberry |
Celtis yunnanensis |
1 |
| hackberry nipplegall maker |
Pachypsylla celtidismamma |
12 |
| hackberry witches' broom |
|
4 |
| hail |
|
2 |
| hairy stereum |
Stereum hirsutum |
2 |
| harlequin bug |
Murgantia histrionica |
1 |
| Harrington's cephalotaxus |
Cephalotaxus harringtonia |
1 |
| hawthorn |
Crataegus spp. |
21 |
| hawthorn agrilus |
Agrilus crataegi |
2 |
| hawthorn lace bug |
Corythucha cydoniae |
10 |
| hawthorn leafminer |
Profenusa canadensis |
1 |
| hawthorn mealybug |
Phenacoccus dearnessi |
2 |
| hazel alder |
Alnus serrulata |
10 |
| hazel leaf-roller |
Byctiscus betulae |
9 |
| hedge maple |
Acer campestre |
7 |
| hemlock woolly adelgid |
Adelges tsugae |
3 |
| herbicides (general) |
|
9 |
| hickory |
Carya spp. |
7 |
| hickory bullet gall midge |
Caryomyia tubicola |
6 |
| hickory gall phylloxera |
Phylloxera caryaecaulis |
6 |
| hickory horned devil |
Citheronia regalis |
3 |
| hickory shoot curculio |
Conotrachelus aratus |
6 |
| hickory shuckworm |
Cydia caryana |
13 |
| hickory spiral borer |
Agrilus arcuatus torquatus |
1 |
| high soil ph |
|
3 |
| himalayan birch |
Betula utilis var. jacquemontii |
5 |
| hinoki false cypress |
Chamaecyparis obtusa |
14 |
| hispidus canker |
Inonotus hispidus |
7 |
| holly |
Ilex spp. |
1 |
| holly leafminer |
Phytomyza ilicis |
1 |
| honeylocust |
Gleditsia triacanthos |
10 |
| honeylocust leafhopper |
Macropsis fumipennis |
2 |
| honeylocust plant bug |
Diaphnocoris chlorionis |
2 |
| honeylocust spider mite |
Platytetranychus multidigituli |
4 |
| honeysuckle aphid |
Hyadaphis tataricae |
1 |
| hophornbeam |
Ostrya virginiana |
5 |
| hornbeam |
Carpinus spp. |
3 |
| hornbeam maple |
Acer carpinifolium |
1 |
| horned oak gall |
Callirhytis cornigera |
4 |
| horse chestnut leafminer |
Cameraria ohridella |
5 |
| human caused injury |
|
19 |
| hybrid strawberry tree |
Arbutus x andrachnoides |
1 |
| Hypoxylon canker |
Annulohypoxylon thouarsianum var. thouarsianum |
3 |
| Hypoxylon canker of aspen |
Entoleuca mammata |
1 |
| Hypoxylon cankers |
Hypoxylon spp. |
1 |
| Ibaliid wasp |
Ibalia leucospoides |
1 |
| illawarra pine |
Callitris muelleri |
1 |
| imbedded objects |
|
2 |
| imported willow leaf beetle |
Plagiodera versicolora |
16 |
| incense cedar broom rust |
Gymnosporangium libocedri |
1 |
| incense-cedar |
Calocedrus decurrens |
13 |
| included bark |
|
2 |
| Indonesian gum |
Eucalyptus deglupta |
4 |
| ink spot leaf blight |
Ciborinia whetzelii |
3 |
| Inonotus canker |
Inonotus ludovicianus |
1 |
| Inonotus canker |
Inonotus nidus-pici |
2 |
| Inonotus heartrot |
Inonotus rickii |
11 |
| introduced basswood thrips |
Thrips calcaratus |
4 |
| introduced pine sawfly |
Diprion similis |
4 |
| Ips engraver beetles |
Ips spp. |
1 |
| iron deficiency |
|
15 |
| Italian alder |
Alnus cordata |
4 |
| Ivory-marked beetle |
Eburia quadrigeminata |
4 |
| ivyleaf maple |
Acer cissifolium |
7 |
| jack pine |
Pinus banksiana |
2 |
| Japanese alder |
Alnus japonica |
4 |
| Japanese angelica tree |
Aralia elata |
3 |
| Japanese apple rust |
Gymnosporangium yamadae |
9 |
| Japanese barberry |
Berberis thunbergii |
1 |
| Japanese beetle |
Popillia japonica |
30 |
| Japanese cedar |
Cryptomeria japonica |
9 |
| Japanese dodder |
Cuscuta japonica |
1 |
| Japanese elm |
Ulmus davidiana var. japonica |
1 |
| Japanese falsecypress |
Chamaecyparis pisifera |
20 |
| Japanese fir |
Abies firma |
28 |
| Japanese flowering cherry |
Prunus serrulata |
14 |
| Japanese flowering crabapple |
Malus floribunda |
4 |
| Japanese maple |
Acer palmatum |
53 |
| Japanese maple scale |
Lopholeucaspis japonica |
3 |
| Japanese pagoda tree |
Styphnolobium japonicum |
4 |
| Japanese pear rust |
Gymnosporangium asiaticum |
2 |
| Japanese privet |
Ligustrum japonicum |
7 |
| Japanese red pine |
Pinus densiflora |
1 |
| Japanese snowbell |
Styrax japonicus |
2 |
| Japanese stewartia |
Stewartia pseudocamellia |
1 |
| Japanese tree lilac |
Syringa reticulata |
9 |
| Japanese umbrella-pine |
Sciadopitys verticillata |
3 |
| Japanese wax scale |
Ceroplastes japonicus |
5 |
| Japanese yew |
Taxus cuspidata |
2 |
| Japanese zelkova |
Zelkova serrata |
5 |
| jelly palm |
Butia capitata |
4 |
| jetbead |
Rhodotypos scandens |
2 |
| jumping oak gall |
Neuroterus saltatorius |
6 |
| juniper witches' broom rust |
Gymnosporangium nidus avis |
1 |
| juniper-pear rust |
Gymnosporangium sabinae |
2 |
| Kalkora mimosa |
Albizia kalkora |
8 |
| katsura tree |
Cercidiphyllum japonicum |
15 |
| katsura tree |
Cercidiphyllum spp. |
2 |
| kauri |
Agathis australis |
6 |
| Kentucky coffeetree |
Gymnocladus dioicus |
4 |
| Kentucky yellowwood |
Cladrastis kentukea |
10 |
| kermes scale |
Allokermes essigii |
3 |
| kermes scales |
Kermes spp. |
1 |
| Knab's leaf beetle |
Chrysomela knabi |
28 |
| knopper gall |
Andricus quercuscalicis |
1 |
| koa |
Acacia koa |
1 |
| Kobus magnolia |
Magnolia kobus |
24 |
| korean fir |
Abies koreana |
1 |
| korean maple |
Acer pseudosieboldianum |
1 |
| Kousa dogwood |
Cornus kousa |
6 |
| kudzu bug |
Megacopta cribraria |
4 |
| lace bug |
Corythucha associata |
11 |
| lackey moth |
Malacosoma neustria |
4 |
| lady beetle |
|
1 |
| lady palm |
Rhapis excelsa |
1 |
| lagerstroemia |
Lagerstroemia spp. |
3 |
| larch casebearer |
Coleophora laricella |
4 |
| larch shoot tortricid moth |
Spilonota laricana |
3 |
| large aspen tortrix |
Choristoneura conflictana |
1 |
| large flat-headed pine heartwood borer |
Chalcophora virginiensis |
2 |
| large larch bark beetle |
Ips cembrae |
2 |
| large timberworm |
Elateroides dermestoides |
3 |
| largeleaf linden |
Tilia platyphyllos |
1 |
| larger elm leaf beetle |
Monocesta coryli |
11 |
| laurel wilt |
Raffaelea lauricola |
14 |
| leaf beetle |
Crepidodera pluta |
1 |
| leaf beetles |
Chrysomela spp. |
1 |
| leaf blister |
Taphrina spp. |
8 |
| leaf blister of elm |
Taphrina ulmi |
1 |
| leaf blotch miner moth |
|
1 |
| leaf blotch miner moth |
Phyllonorycter robiniella |
2 |
| leaf curl |
Taphrina communis |
4 |
| leaf scorches |
|
1 |
| leaf shotholes |
Cylindrosporium spp. |
8 |
| leaf spot |
Passalora sequoiae |
14 |
| leaf spot |
Tubakia dryina |
13 |
| leaf-footed bug |
Leptoglossus fulvicornis |
2 |
| leaffooted pine seed bug |
Leptoglossus corculus |
6 |
| lemonscented gum |
Corymbia citriodora |
2 |
| leopard moth |
Zeuzera pyrina |
3 |
| Leptographium root disease |
Leptographium procerum |
2 |
| lesser cornstalk borer |
Elasmopalpus lignosellus |
2 |
| Leyland cypress |
x Cupressocyparis leylandii |
5 |
| liang ye hua |
Betula luminifera |
8 |
| lichen |
|
4 |
| lichen |
Strigula smaragdula |
2 |
| lichen |
Xanthoria parietina |
1 |
| light brown apple moth |
Epiphyas postvittana |
8 |
| lightning |
|
8 |
| limber pine |
Pinus flexilis |
4 |
| linden |
Tilia spp. |
1 |
| linden aphid |
Eucallipterus tiliae |
2 |
| linden looper |
Erannis tiliaria |
6 |
| Lindley's butterflybush |
Buddleja lindleyana |
1 |
| lined Buprestis beetle |
Buprestis lineata |
2 |
| littleleaf boxwood |
Buxus microphylla |
2 |
| littleleaf leadtree |
Leucaena retusa |
8 |
| littleleaf linden |
Tilia cordata |
8 |
| live oak |
Quercus virginiana |
12 |
| living-hickory borer |
Goes pulcher |
2 |
| loblolly pine |
Pinus taeda |
6 |
| locust borer |
Megacyllene robiniae |
26 |
| locust digitate leaf miner |
Parectopa robiniella |
2 |
| locust leafminer |
Odontota dorsalis |
16 |
| locust sawfly |
Nematus tibialis |
1 |
| lodgepole terminal weevil |
Pissodes terminalis |
1 |
| Loebner's magnolia |
Magnolia x loebneri |
2 |
| Lombardy poplar |
Populus nigra |
2 |
| London planetree |
Platanus hybrida |
1 |
| long-horned beetle |
Eburia spp. |
1 |
| long-horned beetle |
Neoclytus spp. |
1 |
| long-horned beetle |
Plagionotus arcuatus |
1 |
| long-horned beetle |
Plagionotus detritus |
1 |
| long-horned beetle |
Stenosphenus notatus |
1 |
| long-horned beetles |
|
1 |
| long-horned beetles |
Xylotrechus spp. |
1 |
| longleaf pine |
Pinus palustris |
14 |
| Lophodermium needle casts |
Lophodermium spp. |
13 |
| loquat |
Eriobotrya japonica |
2 |
| lucerene longicorn |
Plagionotus floralis |
1 |
| lychee |
Litchi chinensis |
1 |
| macaw palm |
Acrocomia aculeata |
2 |
| magnesium deficiency |
|
2 |
| magnolia |
Magnolia spp. |
2 |
| magnolia scale |
Neolecanium cornuparvum |
4 |
| magnolia white scale |
Pseudaulacaspis cockerelli |
2 |
| manchurian fir |
Abies holophylla |
1 |
| mango |
Mangifera indica |
1 |
| Manila palm |
Veitchia merrillii |
2 |
| maple |
Acer oliverianum |
11 |
| maple |
Acer oliverianum ssp. oliverianum |
12 |
| maple |
Acer oliverianum subsp. formosanum |
43 |
| maple |
Acer pubipalmatum |
1 |
| maple |
Acer spp. |
11 |
| maple |
Acer tegmentosum |
3 |
| maple callus borer |
Synanthedon acerni |
1 |
| maple cankers |
Stegonsporium spp. |
5 |
| maple trumpet skeletonizer |
Catastega aceriella |
2 |
| Marssonina blight of poplar |
Marssonina populi |
7 |
| Marssonina leaf spot |
Marssonina betulae |
16 |
| Marssonina leaf spots |
Marssonina spp. |
4 |
| mealy plum aphid |
Hyalopterus pruni |
2 |
| mealybug destroyer |
Cryptolaemus montrouzieri |
2 |
| mealybugs |
|
2 |
| mechanical |
|
9 |
| Mediterranean tamarisk beetle |
Diorhabda elongata |
1 |
| melaleuca |
Melaleuca spp. |
4 |
| Melampsora leaf rust |
Melampsora laricis-populina |
2 |
| Melampsora rusts |
Melampsora spp. |
3 |
| metalic wood-boring beetles |
Agrilus spp. |
1 |
| metalic wood-boring beetles |
Coraebus florentinus |
2 |
| metalic wood-boring beetles |
Dicerca spp. |
3 |
| metalic wood-boring beetless |
Chalcophora spp. |
1 |
| metallic wood borer |
Brachys spp. |
1 |
| mexican summersweet |
Clethra pringlei |
6 |
| midges |
|
3 |
| milk-white toothed polypore |
Irpex lacteus |
1 |
| mimosa |
Albizia julibrissin |
3 |
| mimosa webworm |
Homadaula anisocentra |
2 |
| mimosa wilt |
Fusarium oxysporum f.sp. perniciosum |
9 |
| minute two-spotted lady beetle |
Diomus notescens |
2 |
| mistletoes |
Phoradendron spp. |
3 |
| mite |
Phytoptus avellanae |
3 |
| miyabe's maple |
Acer miyabei |
1 |
| mockernut hickory |
Carya tomentosa |
13 |
| monarch butterfly |
Danaus plexippus |
1 |
| monkeypuzzle tree |
Araucaria araucana |
9 |
| Monochaetia fungi |
Monochaetia spp. |
10 |
| Monterey cypress |
Cupressus macrocarpa |
15 |
| Monterey pine aphid |
Essigella californica |
2 |
| Montezuma baldcypress |
Taxodium mucronatum |
2 |
| Moreton Bay pine |
Araucaria cunninghamii |
1 |
| mottled umber moth |
Erannis defoliaria |
4 |
| mountain ash |
Sorbus spp. |
1 |
| mountain maple |
Acer spicatum |
2 |
| mountain pine beetle |
Dendroctonus ponderosae |
11 |
| mountain witchalder |
Fothergilla major |
1 |
| mountain-ash sawfly |
Pristiphora geniculata |
2 |
| mourning cloak butterfly |
Nymphalis antiopa |
15 |
| mourning-cypress |
Chamaecyparis funebris |
1 |
| mugo pine |
Pinus mugo |
1 |
| mukutree |
Aphananthe aspera |
11 |
| mulching |
|
3 |
| mule deer |
Odocoileus hemionus |
2 |
| Mycosphaerella fungi |
Mycosphaerella spp. |
2 |
| naio |
Myoporum sandwicense |
1 |
| nannyberry |
Viburnum lentago |
1 |
| Nectria canker |
Nectria spp. |
5 |
| needle blight |
Cercospora pini-densiflorae |
2 |
| needle cast |
Lophodermium seditiosum |
2 |
| needle-shortening pine gall |
Thecodiplosis brachyntera |
1 |
| needlecasts |
Davisomycella spp. |
7 |
| Neonectria canker |
Neonectria galligena |
9 |
| Nepal alder |
Alnus nepalensis |
10 |
| nickel deficiency |
|
5 |
| Norfolk island pine |
Araucaria heterophylla |
5 |
| northeastern sawyer |
Monochamus notatus |
1 |
| northern catalpa |
Catalpa speciosa |
6 |
| northern red oak |
Quercus rubra |
10 |
| Norway maple |
Acer platanoides |
19 |
| Norway spruce |
Picea abies |
9 |
| Notodontid moth |
Pheosia tremula |
7 |
| nursery operations |
|
2 |
| nut curculio |
Conotrachelus hicoriae |
2 |
| nut fruit tortix |
Cydia splendana |
2 |
| nutrient deficiency |
|
5 |
| Nuttall oak |
Quercus texana |
3 |
| oak |
Quercus spp. |
1 |
| oak anthracnose |
Apiognomonia errabunda |
2 |
| oak apple gall |
Amphibolips spp. |
2 |
| oak bullet gall |
Disholcaspis quercusglobulus |
1 |
| oak decline |
|
1 |
| Oak Eggar |
Lasiocampa quercus |
2 |
| oak lace bug |
Corythucha arcuata |
7 |
| oak leaf blister |
Taphrina caerulescens |
19 |
| oak leafminers |
Cameraria spp. |
1 |
| oak lecanium |
Parthenolecanium quercifex |
1 |
| oak phylloxerids |
Phylloxera spp. |
12 |
| oak processionary moth |
Thaumetopoea processionea |
10 |
| oak saucer gall |
Andricus parmula |
1 |
| oak sawfly |
Caliroa petiolata |
1 |
| oak splendour beetle |
Agrilus biguttatus |
3 |
| oak tatters |
|
1 |
| oak wilt |
Ceratocystis fagacearum |
45 |
| obscure scale |
Melanaspis obscura |
2 |
| ocellate gall midge |
Acericecis ocellaris |
1 |
| Ogeechee tupelo |
Nyssa ogeche |
13 |
| Ohio buckeye |
Aesculus glabra |
3 |
| Ohio buckeye |
Aesculus glabra var. arguta |
2 |
| Ojibwaya fungus |
Ojibwaya perpulchra |
1 |
| oleander aphid |
Aphis nerii |
1 |
| olive |
Olea europaea |
11 |
| olive bark beetle |
Phloeotribus scarabaeoides |
8 |
| orange hobnail canker |
Cryphonectria gyrosa |
5 |
| orangestriped oakworm |
Anisota senatoria |
8 |
| oriental beetle |
Anomala orientalis |
2 |
| Oriental hornbeam |
Carpinus orientalis |
1 |
| osage-orange |
Maclura pomifera |
13 |
| overcup oak |
Quercus lyrata |
10 |
| oyster mushroom |
Pleurotus ostreatus |
3 |
| oystershell scale |
Lepidosaphes ulmi |
1 |
| ozone |
|
3 |
| painted buckeye |
Aesculus sylvatica |
6 |
| pale tussock moth |
Halysidota tessellaris |
1 |
| pales weevil |
Hylobius pales |
4 |
| palm lethal yellowing |
Candidatus Phytoplasma palmae PLY |
1 |
| palm mealybug |
Palmicultor palmarum |
2 |
| palm moth |
Paysandisia archon |
17 |
| palmetto weevil |
Rhynchophorus cruentatus |
1 |
| papaya |
Carica papaya |
1 |
| paper birch |
Betula papyrifera |
11 |
| paper-mulberry |
Broussonetia papyrifera |
3 |
| paperbark maple |
Acer griseum |
22 |
| parana pine |
Araucaria angustifolia |
11 |
| pauper's-tea |
Sageretia thea |
1 |
| pawpaw |
Asimina triloba |
26 |
| pear psyllid |
Cacopsylla chinensis |
1 |
| pearleaf blister mite |
Eriophyes pyri |
1 |
| peashrub |
Caragana spp. |
1 |
| pecan |
Carya illinoinensis |
6 |
| pecan catocala |
Catocala spp. |
2 |
| pecan cigar casebearer |
Coleophora laticornella |
1 |
| pecan leaf casebearer |
Acrobasis juglandis |
4 |
| pecan leaf phylloxera |
Phylloxera notabilis |
3 |
| pecan leaf roll mite |
Aceria caryae |
1 |
| pecan leaf scorch mite |
Eotetranychus hicoriae |
1 |
| pecan nut casebearer |
Acrobasis nuxvorella |
8 |
| pecan scab |
Cladosporium caryigenum |
4 |
| pecan serpentine leafminer |
Stigmella judlandifoliella |
8 |
| pecan spittlebug |
Clastoptera achatina |
6 |
| pecan weevil |
Curculio caryae |
22 |
| Peigler's oakworm moth |
Anisota peigleri |
1 |
| penitent underwing |
Catocala piatrix |
2 |
| people |
|
1 |
| periodical cicada |
Magicicada septendecim |
9 |
| Peruvian peppertree |
Schinus molle |
1 |
| pesticides |
|
8 |
| petiolegall psyllid |
Pachypsylla venusta |
10 |
| Phaeoisariopsis fungus |
Phaeoisariopsis magnoliae |
1 |
| Phaeosphaeria fungi |
Phaeosphaeria spp. |
2 |
| Phellinus fungus |
Phellinus pomaceus |
5 |
| Phellinus heartrots |
Phellinus spp. |
1 |
| Phloeospora leaf spot |
Phloeospora spp. |
1 |
| Phomopsis blight |
Phomopsis juniperivora |
9 |
| Phomopsis cankers and twig blights |
Phomopsis spp. |
10 |
| Phyllosticta leaf spots |
Phyllosticta spp. |
8 |
| Phytophthora basal canker |
Phytophthora palmivora |
8 |
| Phytophthora kernoviae |
Phytophthora kernoviae |
4 |
| Phytophthora root and crown rots |
Phytophthora spp. |
2 |
| Phytophthora root rot |
Phytophthora cactorum |
1 |
| Phytophthora root rot |
Phytophthora cinnamomi |
15 |
| Pigmy cypress-pine |
Callitris oblonga |
5 |
| pignut hickory |
Carya glabra |
4 |
| pin cherry |
Prunus pensylvanica |
1 |
| pin oak |
Quercus palustris |
15 |
| pine |
Pinus spp. |
3 |
| pine bark adelgid |
Pineus strobi |
2 |
| pine catkin sawflies |
Xyela spp. |
2 |
| pine devil moth |
Citheronia sepulcralis |
1 |
| pine leaf adelgid |
Pineus pinifoliae |
3 |
| pine looper moth |
Bupalus piniaria |
3 |
| pine needle rusts |
Coleosporium spp. |
7 |
| pine needle scale |
Chionaspis pinifoliae |
3 |
| pine root collar weevil |
Hylobius radicis |
1 |
| pine sawyer beetle |
Monochamus carolinensis |
1 |
| pine spittlebug |
Aphrophora parallela |
14 |
| pine tortoise scale |
Toumeyella parvicornis |
20 |
| pine weevil |
Hylobius pinastri |
1 |
| pine wilt nematode |
Bursaphelenchus xylophilus |
1 |
| pinhole borer |
Platypus cylindrus |
1 |
| pinhole borer |
Platypus spp. |
2 |
| pink hibiscus mealybug |
Maconellicoccus hirsutus |
2 |
| pink trumpet-tree |
Tabebuia rosea |
1 |
| pinyon needle scale |
Matsucoccus acalyptus |
5 |
| pinyon tip moth |
Dioryctria albovittella |
1 |
| plant bug |
|
2 |
| plant bug |
Plagiognathus spp. |
2 |
| planting |
|
4 |
| planting too deep |
|
2 |
| Ploioderma fungi |
Ploioderma spp. |
5 |
| Ploioderma needle cast of pine |
Ploioderma lethale |
11 |
| plum/cherry |
Prunus spp. |
8 |
| polyphemus moth |
Antheraea polyphemus |
1 |
| polypore fungus |
Polyporus arcularius |
1 |
| polypore fungus |
Polyporus badius |
2 |
| pomegranate |
Punica granatum |
7 |
| ponderosa pine |
Pinus ponderosa |
3 |
| ponderosa pine |
Pinus ponderosa var. scopulorum |
2 |
| poor architecture |
|
4 |
| poplar borer |
Saperda calcarata |
2 |
| poplar budgall mite |
Eriophyes parapopuli |
1 |
| poplar leaf beetle |
Chrysomela tremulae |
1 |
| poplar rust |
Melampsora medusae |
2 |
| poplar twiggall fly |
Hexomyza schineri |
3 |
| poplar vagabond aphid |
Mordvilkoja vagabunda |
1 |
| poplar-and-willow borer |
Cryptorhynchus lapathi |
1 |
| Port Orford cedar |
Chamaecyparis lawsoniana |
3 |
| post oak |
Quercus stellata |
1 |
| potato leafhopper |
Empoasca fabae |
1 |
| powderpost beetles |
Trogoxylon spp. |
2 |
| powdery mildew |
Erysiphe flexuosa |
1 |
| powdery mildew |
Erysiphe pulchra |
1 |
| powdery mildew |
Erysiphe spp. |
9 |
| powdery mildew |
Golovinomyces cichoracearum |
1 |
| powdery mildew |
Microsphaera penicillata |
6 |
| powdery mildew |
Oidium spp. |
12 |
| powdery mildew |
Phyllactinia guttata |
3 |
| powdery mildew |
Phyllactinia mali |
1 |
| powdery mildew |
Phyllactinia moricola |
1 |
| powdery mildew |
Phyllactinia spp. |
9 |
| powdery mildew |
Podosphaera leucotricha |
3 |
| powdery mildew |
Podosphaera spp. |
9 |
| powdery mildew |
Sawadaea tulasnei |
1 |
| powdery mildew |
Sphaerotheca phytoptophila |
5 |
| powdery mildew of oak |
Microsphaera alphitoides |
10 |
| powdery mildews |
|
1 |
| prairie crabapple |
Malus ioensis |
2 |
| predatory stink bug |
Podisus placidus |
1 |
| primavera |
Tabebuia donnell-smithii |
1 |
| princesstree |
Paulownia tomentosa |
1 |
| promethea moth |
Callosamia promethea |
1 |
| Prosthecium fungus |
Prosthecium pyriforme |
5 |
| pruning (general) |
|
27 |
| Pseudocercospora leaf spot |
Pseudocercospora vitis |
5 |
| Pseudomonas bacterium |
Pseudomonas savastanoi |
1 |
| psylla |
Trioza spp. |
1 |
| psyllid |
Acizzia jamatonica |
1 |
| psyllid |
Macrohomotoma gladiata |
1 |
| purpleblow maple |
Acer truncatum |
3 |
| purpleosier willow |
Salix purpurea |
1 |
| Pyralid moth |
Acrobasis consociella |
2 |
| Pyralid moth |
Acrobasis tumidana |
3 |
| Pythium diseases |
Pythium spp. |
2 |
| quaking aspen |
Populus tremuloides |
6 |
| queen palm |
Arecastrum romanzoffianum |
3 |
| queen sago |
Cycas circinalis |
2 |
| question mark |
Polygonia interrogationis |
1 |
| quince rust |
Gymnosporangium clavipes |
13 |
| radiation |
|
1 |
| raintree |
Samanea saman |
11 |
| rat, vole, mouse |
|
1 |
| red buckeye |
Aesculus pavia |
46 |
| red chokeberry |
Photinia pyrifolia |
2 |
| red heart of pine |
Phellinus pini |
2 |
| red hickory |
Carya ovalis |
2 |
| red maple |
Acer rubrum |
263 |
| red mulberry |
Morus rubra |
1 |
| red oak clearwing borer |
Paranthrene simulans |
1 |
| red pine |
Pinus resinosa |
2 |
| red pine cone beetle |
Conophthorus resinosae |
1 |
| red toon |
Toona sinensis |
1 |
| red-humped caterpillar moth |
Schizura concinna |
7 |
| red-humped oakworm moth |
Symmerista canicosta |
1 |
| red-legged buprestis |
Buprestis rufipes |
1 |
| red-vein maple |
Acer rufinerve |
1 |
| redbanded thrips |
Selenothrips rubrocinctus |
3 |
| redbay ambrosia beetle |
Xyleborus glabratus |
2 |
| redbud |
Cercis chingii |
1 |
| redbud |
Cercis racemosa |
4 |
| redbud |
Cercis spp. |
6 |
| redbud leaffolder |
Fascista cercerisella |
3 |
| redheaded ash borer |
Neoclytus acuminatus |
30 |
| redheaded pine sawfly |
Neodiprion lecontei |
4 |
| redosier dogwood |
Cornus sericea |
10 |
| resurrection fern |
Pleopeltis polypodioides |
1 |
| rhinoceros beetle |
Xyloryctes jamaicensis |
1 |
| Rhizopus soft rots |
Rhizopus spp. |
1 |
| Rhizosphaera needle cast |
Rhizosphaera kalkhoffii |
2 |
| Rimosus decay |
Phellinus robiniae |
1 |
| river birch |
Betula nigra |
35 |
| Road salt or de-icing salt |
|
2 |
| robustus conk |
Phellinus robustus |
4 |
| rock elm |
Ulmus thomasii |
2 |
| Rocky Mountain juniper |
Juniperus scopulorum |
3 |
| root aphid |
Prociphilus americanus |
2 |
| root lifting, soil heaving, and windthrow |
|
6 |
| root problems |
|
2 |
| root-knot nematode |
Meloidogyne incognita |
1 |
| rose chafer |
Macrodactylus subspinosus |
1 |
| rose Tortrix moth |
Archips rosana |
5 |
| roundleaf dogwood |
Cornus rugosa |
1 |
| roundleaf thoroughwort |
Eupatorium rotundifolium |
1 |
| royal poinciana |
Delonix regia |
3 |
| royal star magnolia |
Magnolia stellata |
5 |
| ruffled fan palm |
Licuala grandis |
3 |
| Russian-olive |
Elaeagnus angustifolia |
7 |
| rustic borer |
Xylotrechus colonus |
3 |
| sago palm |
Cycas revoluta |
1 |
| saltcedar |
Tamarix ramosissima |
2 |
| saltmarsh caterpillar |
Estigmene acrea |
2 |
| Sandberg's birch |
Betula x sandbergii |
3 |
| sapsucker injury |
|
10 |
| Sarea fungus |
Sarea resinae |
8 |
| sassafras |
Sassafras albidum |
12 |
| saucer magnolia |
Magnolia x soulangiana |
12 |
| sawflies |
Caliroa spp. |
8 |
| sawfly |
Macremphytus spp. |
2 |
| sawfly parasitic wasp |
Monodontomerus dentipes |
1 |
| sawtooth oak |
Quercus acutissima |
32 |
| scaly pholiota |
Pholiota squarrosa |
3 |
| scarab beetle |
Phyllophaga falsa |
4 |
| scarabs or scarab beetles |
|
1 |
| scarlet oak |
Quercus coccinea |
1 |
| scepter holly |
Ilex x 'Scepter' |
1 |
| Scots pine |
Pinus sylvestris |
4 |
| Scottish asphodel |
Clusia rosea |
1 |
| scrub hickory |
Carya floridana |
1 |
| sea hibiscus |
Hibiscus tiliaceus |
1 |
| seasian wood |
Cinnamomum parthenoxylon |
1 |
| seed bugs |
Oxycarenus lavaterae |
4 |
| Seiridium canker of Monterey cypress |
Seiridium cardinale |
3 |
| Seiridium cankers |
Seiridium spp. |
11 |
| Septoria leaf spot and cankers |
Septoria spp. |
13 |
| sequoia pitch moth |
Synanthedon sequoiae |
1 |
| Serbian spruce |
Picea omorika |
4 |
| serviceberry |
Amelanchier alnifolia |
1 |
| serviceberry |
Amelanchier arborea |
28 |
| serviceberry |
Amelanchier spp. |
6 |
| shagbark hickory |
Carya ovata |
2 |
| shear crack |
|
1 |
| sheep |
Ovis aries |
3 |
| sheoak |
Casuarina spp. |
2 |
| shepherd's crook leaf and shoot blight |
Venturia tremulae |
4 |
| shingle oak |
Quercus imbricaria |
4 |
| shoebutton ardisia |
Ardisia elliptica |
1 |
| Siberian elm |
Ulmus pumila |
3 |
| Siberian elm canker |
Botryodiplodia hypodermia |
1 |
| silk-floss tree |
Chorisia speciosa |
3 |
| silver fir |
Abies alba |
1 |
| silver linden |
Tilia tomentosa |
1 |
| silver maple |
Acer saccharinum |
7 |
| silverspotted skipper |
Epargyreus clarus |
1 |
| Sirex woodwasp |
Sirex noctilio |
1 |
| Sirococcus blight of conifers |
Sirococcus conigenus |
6 |
| site selection mistakes |
|
1 |
| sixspined ips |
Ips calligraphus |
15 |
| slashing and bucking |
|
1 |
| slime flux |
|
4 |
| slimleaf pawpaw |
Asimina angustifolia |
1 |
| slippery elm |
Ulmus rubra |
9 |
| small Philippine acacia |
Acacia confusa |
2 |
| small southern pine engraver |
Ips avulsus |
2 |
| smaller European elm bark beetle |
Scolytus multistriatus |
1 |
| smooth patch of oak |
Aleurodiscus oakesii |
3 |
| snow and ice damage (snow load) |
|
12 |
| soapberry |
Sapindus saponaria |
3 |
| soapberry borer |
Agrilus prionurus |
15 |
| soft scale |
Neopulvinaria innumerabilis |
6 |
| soft scales |
Parthenolecanium spp. |
1 |
| soil compaction |
|
1 |
| sooty mold |
|
8 |
| sooty-bark canker |
Encoelia pruinosa |
2 |
| sourwood |
Oxydendrum arboreum |
5 |
| Southern California walnut |
Juglans californica |
9 |
| southern catalpa |
Catalpa bignonioides |
13 |
| southern crabapple |
Malus angustifolia |
3 |
| southern magnolia |
Magnolia grandiflora |
10 |
| southern pine beetle |
Dendroctonus frontalis |
5 |
| southern pine sawyer |
Monochamus titillator |
30 |
| southern sugar maple |
Acer barbatum |
49 |
| southern waxmyrtle |
Morella cerifera |
11 |
| Spanish moss |
Tillandsia usneoides |
1 |
| speckled alder |
Alnus incana ssp. rugosa |
1 |
| Sphaeropsis tip blights and cankers |
Sphaeropsis spp. |
1 |
| spider mites |
|
2 |
| spindle tree rust mite |
Cecidophyes psilonotus |
6 |
| spiny oak slug |
Euclea delphinii |
1 |
| spot anthracnose |
Elsinoe corni |
2 |
| spotted lady beetle |
Coleomegilla maculata |
1 |
| spruce coneworm |
Dioryctria abietella |
6 |
| spruce needle rust |
Chrysomyxa weirii |
1 |
| spruce spider mite |
Oligonychus ununguis |
7 |
| squirrel |
Sciurus spp. |
1 |
| Sri Lanka weevil |
Myllocerus undatus |
2 |
| staghorn sumac |
Rhus typhina |
2 |
| stem girdling roots |
|
12 |
| stewartia |
Stewartia spp. |
1 |
| Stigmina leaf spots |
Stigmina spp. |
4 |
| stink bugs |
|
4 |
| storm damage (general) |
|
1 |
| strawberry tree |
Arbutus unedo |
4 |
| striped maple |
Acer pensylvanicum |
8 |
| striped pine scale |
Toumeyella pini |
1 |
| Strumella canker |
Urnula craterium |
1 |
| subalpine fir |
Abies lasiocarpa |
1 |
| sudden oak death |
Phytophthora ramorum |
89 |
| sugar maple |
Acer saccharum |
34 |
| sugar maple borer |
Glycobius speciosus |
1 |
| sugarberry |
Celtis laevigata |
3 |
| sulfur shelf |
Laetiporus sulphureus |
4 |
| sumac stem borer |
Oberea ocellata |
1 |
| sunscald |
|
6 |
| Surinam cherry |
Eugenia uniflora |
1 |
| swamp white oak |
Quercus bicolor |
2 |
| sweet acacia |
Acacia farnesiana |
3 |
| sweet cherry |
Prunus avium |
4 |
| sweetbay |
Magnolia virginiana |
14 |
| sweetgum |
Liquidambar styraciflua |
35 |
| sweetgum scale |
Diaspidiotus liquidambaris |
1 |
| sweetheart tree |
Euscaphis japonica |
1 |
| sycamore anthracnose |
Apiognomonia veneta |
7 |
| sycamore dieback |
|
3 |
| sycamore lace bug |
Corythucha ciliata |
13 |
| Sycamore maple |
Acer pseudoplatanus |
4 |
| Tachinid flies |
|
2 |
| Taiwan cui bai |
Calocedrus formosana |
2 |
| tamarack |
Larix laricina |
2 |
| tanoak |
Lithocarpus densiflorus |
3 |
| tar spot |
Rhytisma americanum |
2 |
| tar spot |
Rhytisma punctatum |
1 |
| tar spot |
Rhytisma salicinum |
1 |
| tar spot needlecast |
Davisomycella ampla |
6 |
| tar spot of maple |
Rhytisma acerinum |
15 |
| tar spots |
Rhytisma spp. |
1 |
| Tatarian honeysuckle |
Lonicera tatarica |
2 |
| tatarian maple |
Acer tataricum |
4 |
| tea scale |
Fiorinia theae |
2 |
| tent caterpillar |
Eriogaster lanestris |
20 |
| termites |
|
5 |
| thick-walled maze polypore |
Daedalea quercina |
2 |
| thin-walled maze polypore |
Daedaleopsis confragosa |
1 |
| Thousand Cankers Disease |
Geosmithia morbida |
15 |
| thrips |
Holopothrips tabebuia |
9 |
| Thyronectria canker |
Thyronectria austroamericana |
12 |
| tip moth |
|
1 |
| toddy palm |
Borassus flabellifer |
3 |
| topping |
|
2 |
| Torticid moth |
Choristoneura hebenstreitella |
5 |
| Tortricid moth |
Cydia fagiglandana |
4 |
| Torymid wasp |
Megastigmus suspectus |
2 |
| Trametes wood decay |
Trametes hirsuta |
4 |
| transplant shock |
|
3 |
| tree spade |
|
6 |
| tree-of-heaven |
Ailanthus altissima |
16 |
| trident maple |
Acer buergerianum |
12 |
| tropical almond |
Terminalia catappa |
5 |
| true bugs |
|
2 |
| Truncatella fungi |
Truncatella spp. |
8 |
| trunk rot |
Peniophora rufa |
1 |
| trunk rot |
Pholiota populnea |
3 |
| Tubercularia cankers |
Tubercularia spp. |
3 |
| tuliptree |
Liriodendron spp. |
1 |
| tuliptree scale |
Toumeyella liriodendri |
22 |
| tungoil tree |
Vernicia fordii |
10 |
| turbinella oak |
Quercus turbinella |
5 |
| turf (general) |
|
1 |
| turkey tail |
Trametes versicolor |
7 |
| Turkish hazelnut |
Corylus colurna |
4 |
| turpentine borer |
Buprestis apricans |
2 |
| tussock moths |
|
1 |
| twig canker |
Lepteutypa cupressi |
2 |
| twig girdler |
Oncideres cingulata |
10 |
| two needle pinyon |
Pinus edulis |
1 |
| two-banded Japanese weevil |
Pseudocneorhinus bifasciatus |
1 |
| two-wing silverbell |
Halesia diptera |
1 |
| twolined chestnut borer |
Agrilus bilineatus |
1 |
| twolined spittlebug |
Prosapia bicincta |
2 |
| twospotted spider mite |
Tetranychus urticae |
2 |
| umbrella magnolia |
Magnolia tripetala |
20 |
| unknown |
|
2 |
| unknown fungi |
|
5 |
| unknown scale |
|
4 |
| unknown virus |
|
2 |
| urban ecosystem |
|
13 |
| urban planting |
|
9 |
| vandalism |
|
1 |
| variegated fritillary |
Euptoieta claudia |
9 |
| vedalia beetle |
Rodolia cardinalis |
1 |
| velvet ash |
Fraxinus velutina |
1 |
| vernal witchhazel |
Hamamelis vernalis |
2 |
| Verticillium wilt |
Verticillium albo atrum |
2 |
| Verticillium wilt |
Verticillium dahliae |
4 |
| Verticillium wilts |
Verticillium spp. |
8 |
| Violet-toothed Polypore |
Trichaptum biforme |
1 |
| Virginia pine |
Pinus virginiana |
3 |
| Virginia roundleaf birch |
Betula uber |
1 |
| vole |
Microtus spp. |
2 |
| walnut caterpillar |
Datana integerrima |
38 |
| walnut catkingall mite |
Eriophyes neobeevori |
4 |
| walnut leafhopper |
Dikrella readionis |
5 |
| walnut scale |
Diaspidiotus juglansregiae |
2 |
| walnut twig beetle |
Pityophthorus juglandis |
13 |
| Washington hawthorn |
Crataegus phaenopyrum |
4 |
| water birch |
Betula occidentalis |
2 |
| water hickory |
Carya aquatica |
2 |
| wax mallow |
Malvaviscus arboreus var. drummondii |
1 |
| wax scales |
Ceroplastes spp. |
2 |
| weeping fig |
Ficus benjamina |
2 |
| weeping willow |
Salix babylonica |
1 |
| weevil |
Cossonus corticola |
1 |
| western conifer-seed bug |
Leptoglossus occidentalis |
3 |
| western drywood termite |
Incisitermes minor |
4 |
| western red cedar |
Thuja plicata |
5 |
| western redbud |
Cercis canadensis var. texensis |
12 |
| western soapberry |
Sapindus saponaria var. drummondii |
10 |
| western tent caterpillar |
Malacosoma californicum |
8 |
| wet rot |
Coniophora puteana |
2 |
| wetwood |
|
1 |
| white alder |
Alnus rhombifolia |
6 |
| white ash |
Fraxinus americana |
7 |
| white cypress-pine |
Callitris columellaris |
8 |
| white eastern redbud |
Cercis canadensis alba |
1 |
| white fir |
Abies concolor |
6 |
| white fringetree |
Chionanthus virginicus |
29 |
| white heartwood rot |
Phellinus tremulae |
20 |
| white leadtree |
Leucaena leucocephala |
1 |
| white mulberry |
Morus alba |
1 |
| white muscadine disease |
Beauveria bassiana |
3 |
| white oak |
Quercus alba |
6 |
| white peach scale |
Pseudaulacaspis pentagona |
6 |
| white pine blister rust |
Cronartium ribicola |
1 |
| white pine weevil |
Pissodes strobi |
18 |
| white poplar |
Populus alba |
8 |
| white prunicola scale |
Pseudaulacaspis prunicola |
1 |
| white satin moth |
Leucoma salicis |
1 |
| white spruce |
Picea glauca |
2 |
| white willow |
Salix alba |
4 |
| white-rot fungus |
Trametes pubescens |
3 |
| whiteflies |
|
1 |
| whiteflower kurrajong |
Brachychiton populneum |
1 |
| whitefringed beetles |
Naupactus spp. |
2 |
| whitemarked tussock moth |
Orgyia leucostigma |
3 |
| Whitespire |
Betula platyphylla var. japonica |
14 |
| whitespotted sawyer |
Monochamus scutellatus |
3 |
| willow |
Salix rosmarinifolia |
1 |
| willow |
Salix spp. |
2 |
| willow leaf beetle |
Chrysomela vigintipunctata |
2 |
| willow leaf beetle |
Lochmaea capreae |
1 |
| willow leaf gall mite |
Aculops tetanothrix |
1 |
| willow oak |
Quercus phellos |
3 |
| willow scale |
Diaspidiotus gigas |
1 |
| wind |
|
4 |
| winged burning bush |
Euonymus alatus |
3 |
| winged elm |
Ulmus alata |
37 |
| winter moth |
Operophtera brumata |
3 |
| winter-flowering cherry |
Prunus subhirtella |
3 |
| witch's butter |
Tremella mesenterica |
1 |
| witch-hazel |
Hamamelis virginiana |
3 |
| witches' broom |
|
2 |
| woman's tongue tree |
Albizia lebbeck |
1 |
| wood borers |
|
3 |
| wood decay |
Schizophyllum commune |
3 |
| wood decay and heart rots of hardwoods |
Fomes spp. |
2 |
| wool sower gall maker |
Callirhytis seminator |
1 |
| woolly alder aphid |
Prociphilus tessellatus |
4 |
| woolly apple aphid |
Eriosoma lanigerum |
30 |
| woolly elm aphid |
Eriosoma americanum |
6 |
| woolly whitefly |
Aleurothrixus floccosus |
1 |
| wych elm |
Ulmus glabra |
7 |
| X-disease |
Phytoplasma MLO |
1 |
| yaupon |
Ilex vomitoria |
5 |
| yellow birch |
Betula alleghaniensis |
4 |
| yellow birch decline |
|
1 |
| yellow buckeye |
Aesculus flava |
4 |
| yellow butterfly palm |
Dypsis lutescens |
11 |
| yellow pecan aphid |
Monelliopsis pecanis |
5 |
| yellow poplar weevil |
Odontopus calceatus |
8 |
| yellow-poplar |
Liriodendron tulipifera |
26 |
| yellowheaded spruce sawfly |
Pikonema alaskensis |
1 |
| yellownecked caterpillar |
Datana ministra |
2 |
| yellowwood |
Afrocarpus falcatus |
1 |
| yew plum pine |
Podocarpus macrophyllus |
4 |
| Yoshino cherry |
Prunus yedoensis |
4 |
| zebra caterpillar |
Melanchra picta |
1 |
| zonate leaf spot |
Grovesinia pyramidalis |
2 |
