Evergreen trees are perfect for year round beauty, but can turn into a feeding ground for a pest called Bagworm.

When are my trees at risk and what should I look for?

Bagworm caterpillars are the larval stage of a moth that is native to North America. This caterpillar feeds on various plants, and as it feeds, constructs a bag made of silk and other plant parts to make its body look like a “bag”. As the population of bagworm spreads, needles and leaves on the infested tree will begin to turn brown and fall off. 

Bagworms feed on both deciduous and evergreen trees and shrubs. They overwinter in the egg stage. The bags will hatch in May to early June and then the small caterpillars will begin to feed on the plants. As the summer progresses, a significant amount of foliage will be consumer by the caterpillar.

In late summer, the caterpillars will cease feeding and attach their bag to their host plants.

Effective management of bagworm populations are very achievable. Your local arborist will assess your property and develop a unique course of action to treat your infestations. Find your local arborist here or view the full PDF.

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