Webworm tents soon to appear

Published: Wednesday, June 25, 2014 at 02:26 PM.

The adult is mostly white in the north, but in the south, it may be marked with black or brown spots on the forewings. It is quite 'hairy', and the front legs have bright yellow or orange patches.

Several methods of control can be applied to webworms. Small nests can be pruned out of small to medium trees. Try to detect the nests when only several leaves are involved. These small nests can be easily crushed. Do not burn the nests in trees as this may do additional damage to the tree.

The bacterial insecticide, Bacillus thuringensis (Bt), is quite effective against fall webworms if it is applied when the larvae are small. Thoroughly cover leaves next to nests. As these leaves are incorporated into the nest and eaten, the Bt will be ingested. Many standard chemical insecticides are also effective when applied to the foliage surrounding the nest.

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