Tent Worms - Knowledgebase Question

Crown Point, In
Question by rav713
April 11, 2009
I have tried ortho's systemic and the tent worms keep coming back to 2 blue spruce trees. I have been picking them off by hand which helps but what is the cure?

Answer from NGA
April 11, 2009


You can control tent worms with sprays of Bt (Bacillus thuringiensis). Bt is a bacterium which acts as a stomach poison and is fatal to caterpillars. Best wishes with your spruce trees.

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