Control Bagworm Larvae When Small

Posted: June 5, 2014

Bagworms, an absolute plague in parts of Allegheny County for the last few years, are now hatching.
Photo: Sandy Feather

Photo: Sandy Feather

It is best to control bagworm larvae with insecticide applications now when they are small, rather than waiting until they are too big.

Unfortunately, people do not notice them when they are this small, and by the time they do see them, they may be too mature to control.

If you catch them when they are small, you can get good control with softer insecticides such as:

  • Bacillus thuringiensis (DiPel, Foray, Javelin, Biobit, Crymax, etc.)
  • spinosad (Conserve SC)

If you want to use something with some residual, cyfluthrin (Tempo 20WP, Decathlon 20 WP) or permethrin (Astro, Pounce 25WP) will do the trick.

Contact Information

Sandy Feather
  • Extension Educator, Green Industry
Phone: 412-482-3454