It’s May, and it’s time to treat your trees for pests, such as the Winter Moth, Lace Bug, and Diplodia Tip Blight.
Although spring came a little late this year, rest assured that it is actually here, and the same insects and diseases that infest your trees every spring are back. Winter Moth activity has picked up drastically over the last week, and it is imperative that you treat your trees for these pests before they chew and shred all your leaves. Check your deciduous trees, mainly the oaks, maples, crabapples, dogwoods, and cherries, for signs of these small green caterpillars, as their presence seems to be multiplying each year.
Lace Bugs, which were extremely abundant last spring due to the warm temperatures and excess moisture, will be back this spring as well. Since we have had a colder early spring, Lace Bugs populations may be down, but they are certainly still a pest to worry about. Check the leaves on your broadleaf evergreens and deciduous trees for yellow spotting. Lace Bugs will feed on the underside of leaves, and because of their piercing and sucking mouths, yellow spots will begin to show on the upper side of leaves as they kill the cells within.
Diplodia Tip Blight is a fungal disease which primarily targets the Austrian and Red Pines in our region. Look for signs of browning or curling needles in your pines, as this is an early indicator of Tip Blight. Treatments for Tip Blight must begin in early May. Also, you must be careful when pruning infected trees as the fungus can spread easily.
Insect and disease infestation can fluctuate from year to year based on a number of factors, including temperature and moisture; however, without proper treatment, your trees will be infected. Implementing an insect and disease management program is recommended in order to combat the restless pests in our region.