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Ornamentals: Trees

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Image Subject Name Scientific Name Description
5487884 Diplodia blight Sphaeropsis sapinea Tip blight
4212098 Rhizosphaera needle cast Rhizosphaera kalkhoffii general view showing typical pattern and color
5033080 Diplodia blight Sphaeropsis sapinea Diplodia shoot blight on red pine on poor site.
5031068 Rhizosphaera needle cast Rhizosphaera kalkhoffii
5335001 Diplodia blight Sphaeropsis sapinea
5335002 Diplodia blight Sphaeropsis sapinea
5335003 Diplodia blight Sphaeropsis sapinea
5335004 Diplodia blight Sphaeropsis sapinea clubbed shoots showing needle stunting and death
5335026 Leptographium root disease Leptographium procerum
5335036 Rhizosphaera needle cast Rhizosphaera kalkhoffii discoloration of older needles
5031055 Rhizosphaera needle cast Rhizosphaera kalkhoffii Rhizosphaera needle cast on white spruce. Off color foliage.
5366716 Thyronectria canker Thyronectria austroamericana Symptoms of Thyronectria canker (Thyronectria austro-americana) on the trunk of a honeylocust (Gleditsia triacanthos) tree.
5031050 Rhizosphaera needle cast Rhizosphaera kalkhoffii Rhizosphaera needle cast associated with a decline of white spruce in Wisconsin
5031053 Rhizosphaera needle cast Rhizosphaera kalkhoffii Rhizosphaera needle cast on lower branches of white spruce.
5031054 Rhizosphaera needle cast Rhizosphaera kalkhoffii Rhizosphaera needle cast on white spruce windbreaks in a nursery.
5031060 Rhizosphaera needle cast Rhizosphaera kalkhoffii Off color foliage infected with Rhizosphaera kalkhoffii.
5050088 Diplodia blight Sphaeropsis sapinea Main stem Diplodia infection on jack pine.
5356880 Thyronectria canker Thyronectria austroamericana Honey locust tree showing symptoms of infection with Thyronectria canker (Thyronectria austroamericana).
5366711 Thyronectria canker Thyronectria austroamericana Asci of Thyronectria canker (Thyronectria austroamericana) on the trunk of a honeylocust tree.
5366795 Marssonina blight of poplar Marssonina populi Marssonina blight (Marssonina populi) on leaves of an aspen tree.
5366794 Marssonina blight of poplar Marssonina populi Marssonina blight (Marssonina populi) on leaves of an aspen tree.
5366715 Thyronectria canker Thyronectria austroamericana Symptoms of Thyronectria canker (Thyronectria austro-americana) on the trunk of a honeylocust (Gleditsia triacanthos) tree.
5366714 Thyronectria canker Thyronectria austroamericana Close-up view of the signs and symptoms of Thyronectria canker (Thyronectria austro-americana) on the trunk of a honeylocust (Gleditsia triacanthos) tree.
5366713 Thyronectria canker Thyronectria austroamericana Symptoms of Thyronectria canker (Thyronectria austro-americana) on the trunk of a honeylocust (Gleditsia triacanthos) tree.
5366712 Thyronectria canker Thyronectria austroamericana Close-up view of symptoms of Thyronectria canker (Thyronectria austro-americana) on the trunk of a honeylocust (Gleditsia triacanthos) tree.
5366710 Thyronectria canker Thyronectria austroamericana Symptoms of Thyronectria canker (Thyronectria austro-americana) on the trunk of a honeylocust (Gleditsia triacanthos) tree.
5051003 Diplodia blight Sphaeropsis sapinea
5051004 Diplodia blight Sphaeropsis sapinea
5259026 southern blight Sclerotium rolfsii
5259027 southern blight Sclerotium rolfsii
5029013 Diplodia blight Sphaeropsis sapinea Main stem infection causing death of top.
5029015 Diplodia blight Sphaeropsis sapinea Heavy infection and shoot mortality in larger trees following a hail storm.
5029016 Diplodia blight Sphaeropsis sapinea Severe shoot blight on a very poor site.
5029018 Diplodia blight Sphaeropsis sapinea Dark discoloration in infected wood of red pine.
5029014 Diplodia blight Sphaeropsis sapinea Sphaeropsis sapinea and Diplodia scrobiculata can cause shoot blight in jack pine.
1479003 Sirococcus blight of conifers Sirococcus conigenus
1479004 Sirococcus blight of conifers Sirococcus conigenus Needle droop, one of the symptoms that can indicate sirococcus blight on red pine. Photo taken on the Chequamegon National Forest in northern Wisconsin.
5041067 Diplodia blight Sphaeropsis sapinea
5041068 Diplodia blight Sphaeropsis sapinea
5041069 Diplodia blight Sphaeropsis sapinea
5041070 Diplodia blight Sphaeropsis sapinea
5041071 Diplodia blight Sphaeropsis sapinea
5058079 Sirococcus blight of conifers Sirococcus conigenus
5058080 Sirococcus blight of conifers Sirococcus conigenus
5058081 Sirococcus blight of conifers Sirococcus conigenus
5058082 Sirococcus blight of conifers Sirococcus conigenus
5049047 butternut canker Sirococcus clavigignenti-juglandacearum
5049048 butternut canker Sirococcus clavigignenti-juglandacearum
5049049 butternut canker Sirococcus clavigignenti-juglandacearum
5049050 butternut canker Sirococcus clavigignenti-juglandacearum
5049051 butternut canker Sirococcus clavigignenti-juglandacearum
5049052 butternut canker Sirococcus clavigignenti-juglandacearum
5049053 butternut canker Sirococcus clavigignenti-juglandacearum
1254069 Dothichiza canker Dothichiza populea Dead crown due to canker infection, Fort Collins, CO.

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