Bagworms - Knowledgebase Question

Goodlettsville, TN (Zone 6B)
Question by christydoug
February 12, 2007
I searched for answers on how to get rid of bagworms and only found one relating to webworms. I had an infestation of bagworms on a house I purchased this past summer. I'm not sure what type of shrub it is, but over 3/4 of the leaves were eaten. I pulled the bagworms off, tons of them, and tied up the bag and put into the trash. More got on the shrubs. I would like to know if there is something I can treat the plant with to make them not get on there? Thanks alot!


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Answer from NGA
February 12, 2007

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Bacillus thuringiensis (Bt), sold under the trade name Dipel and Thuricide, is a great weapon against bagworms. It is a bacterium that acts as a stomach poison, so expect the bagworms to continue feeding for a time. It also works against other critters like gypsy moths, tent caterpillars, webworms, tomato hornworms, and other moth larvae). It is a great organic remedy that will not harm the birds, bees, animals and other insects in the garden. Since the pests must consume it for it to be effective, wait until you see them. BT is very popular and is widely available in mail order catalogs and most garden centers. For best results, apply in June, when the caterpillars are active.

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