I would recommend pruning them to thin the canopies approximately 15% by removing live, rubbing, and interfering...
The preferred treatment for hemlock woolly adelgid is a soil applied systemic treatment that gives about 3-4 years...
This is likely an insect called a leafroller that created the webbing. If this is the case, it has probably completed...
Emerald Ash Borer (EAB) is actively damaging and killing trees in the Northwest DC area. If you have any ash trees, I...
If the branch is still attached by the cambium, (the "skin" of the trunk), then leave it where it is for the time...
Ants only excavate dead wood, so there is little concern the ants will affect the health of the tree. The bigger...
Treatment would be a post-flowering application to stop new damage, then a fall preventative.
It is most likely caterpillars even though you may not see them. Any tree is worth saving and we can certainly do our...
There is a systemic insecticide that works well in controlling this insect. The negative outcome from its use will be...
Light pruning, which is generally all that should be needed in proactive tree management programs can be done at any...
