| PLANT |
PEST |
ACTION |
| Arborvitae |
Arborvitae Leafminer |
Last chance to treat with registered pesticide if needed.
|
| Birch |
Aphids |
Check for natural enemies before making treatment
decision. |
| Catalpa |
Catalpa Aphid |
Inspect underside of leaves for green-yellow nymphs.
Look for lacewing eggs, ladybugs, and other natural enemies.
|
| Cherry |
White Prunicola |
Scale Treat before crawlers wax over. |
| Crabapple |
Green Peach Aphids |
Check for natural enemies before making treatment decision.
|
| Dogwood |
Dogwood Borer |
Inspect trunk and large branches for holes and
fresh sawdust. Destroyby hand or treat with nematodes. |
| Elm |
Elm Leaf Beetle |
Treat foliage when larvae or skeletonizing is
detected. Trunk applications may kill migrating larvae. |
| Euonymus |
Euonymus Scale |
Treat before crawlers wax over |
| Evergreens |
Cottony Taxus Scale |
Look for white crawlers on underside of leaves
or needles. Treat with registered pesticide if needed. |
| Hardwoods |
Cottony Maple Leaf Scale |
Look for white crawlers on underside of leaves.
Treat with registered pesticide if needed. |
| Hemlock |
Hemlock Looper |
Shake branches, look for green inchworms dropping
on silk threads.Treat with registered pesticide such as B.T.
if needed. |
| Holly |
Cottony Camellia |
Scale Inspect foliage and stems for large, white,
waxy scales |
| Juniper |
Juniper Scale |
Treat before crawlers wax over. |
| Linden |
Linden Bark Borer |
Examine trunk and branches for holes, reddish
frass and small moths.Treat with registered pesticide if needed.
|
| Mountainash |
Mountainash Sawfly |
Examine leaflets in shadiest areas for clusters of yellow-green
larvae. Pick off or treat with registered pesticide if needed.
|
| Oak |
Oak Sawflies |
Examine leaves for green, slug-like, larvae. Treat
with registered pesticide if needed. |
| Pine (Soft) |
Introduced Pine Sawfly |
Inspect needles for grey-green larvae. Pick off
or treat with registered pesticide if needed. |
| |
White Pine Weevil |
Inspect leaders for flagging. Prune out infested
leaders before they turn brown. |
| Rhododendron |
Rhododendron Borer |
Inspect large lower branches for holes and fresh sawdust.
Destroy by hand or treat with nematodes. |
| Yew |
Black Vine Weevil |
Check burlap traps for adult weevils. Treat with registered
pesticide if needed two weeks after first captures. |
