| American chestnut |
Castanea dentata |
4 |
| ash root rot |
Scytinostroma galactinum |
1 |
| aspen/poplar |
Populus spp. |
1 |
| beech bark disease |
Nectria coccinea |
1 |
| beech scale |
Cryptococcus fagisuga |
2 |
| black knot |
Apiosporina morbosa |
1 |
| chestnut blight or canker |
Cryphonectria parasitica |
8 |
| Dutch elm disease (novi-ulmi) |
Ophiostoma novo-ulmi |
1 |
| emerald ash borer |
Agrilus planipennis |
4 |
| planting |
|
1 |
| sudden oak death |
Phytophthora ramorum |
1 |
| tuliptree scale |
Toumeyella liriodendri |
1 |
| turbinella oak |
Quercus turbinella |
1 |