KATHY’S HOME & GARDEN TIPS – SPRING INSECTS ON TREES

KATHY’S HOME & GARDEN TIPS – SPRING INSECTS ON TREES

Just as we watch out for weeds emerging from our lawns we also need to keep an eye on our trees for dangerous insects that appear in spring. Early action will take care of these pests before they overrun the entire tree. Following are three common pests we see in the Midwest.

Gypsy moths first appear as small egg masses about an inch by an inch and a half wide. They are tan to yellowish brown in color. Carefully scrape them off and try not to take off much bark. Plunge them into soapy water to kill them. Gypsy moths cause additional problems to humans as they can cause allergic reactions in those that are sensitive. Use gloves and a mask if you have severe allergies.

One of two pests that feed on evergreens and deciduous trees are called bagworms. Caterpillars feed during the summer on leaves and needles. They leave behind an egg sack that looks a lot like a pinecone that holds about a 1000 eggs! They are easier to see in the spring before full leaf out. Cut them off well before June.

Some insects are harder to spot. Zimmerman moths have larvae that feed under the bark. Probably the only evidence you will see is a white or pinkish pitch that drips down the bark. This will weaken the branches till they break. You can apply insecticide in spring and fall but here sometimes a good offense is more important than a good defense. Many insects are attracted to weak and stressed trees. Make sure your trees have enough food and water to thrive and be healthy.

KATHLEEN WEAVER-ZECH & DEAN’S TEAM CHICAGO