To learn more about other common pests you may find in your yard today, visit the UMass Extension Landscape Message Newsletter
As spring unfolds it is time to plan for the up coming growing season. Inspect your trees for any damage that may have occurred over the winter. Early spring is a good time to do this, because any damage will be more clearly visible before the new foliage emerges.
The first generation of Hemlock Wooly Adelgid will begin emerging in April and May. Hemlock Wooly Adelgid is an invasive insect pest that is devastating our native hemlock trees in New England. Adelgids are aphid-like insects that kill hemlock trees by feeding on their sap and injecting toxic saliva into the tree. Infested trees often die within 3 to 5 years. White, cottony masses at the base of the needles indicate that your tree has adelgids. Adelgids are readily controlled with horticultural oil sprays or systemics applied by trunk or soil injection. Spring is a good time for your Arborist to apply treatments to control the spread of this devastating pest.
If your crabapple trees were defoliated by mid-July last summer, then now is the time to take action so it does not occur again this year. The primary cause of this early defoliation is a fungal disease called Apple Scab. Apple Scab will not kill a tree, but reduces the aesthetic value of the tree. Three applications of a preventive fungicide beginning as the leaves are half expanded will keep your crabapple trees looking good all summer. Call in early April to get on the schedule for this important treatment.