Invasion of Black Blister Beetles


| 7/26/2016 3:47:00 PM


One Foot in the CityI have had a few insect problems in my flower and herb garden over the years. For several years, grasshoppers attacked, eating any and everything green and even ate the bark off the small trees. Although I have not seen black blister beetles for several years, this year they have arrived and are doing great damage.

Black blister beetle 

Blister beetles will feed on just about any leaf that grows in your garden. They have now removed the chard from the garden and are starting on my hostas. They seem particularly fond of certain weeds that grow in the pathways. The experts tell us they can arrive in swarms, and indeed, they do seem to have done so. 

The one redeeming quality of black blister beetles is that they also do damage to grasshoppers, one of the most destructive farm and garden pests. “Newly hatched beetle larvae use their legs to seek out clusters of grasshopper eggs to feed on. In this sense, blister beetles can be considered a beneficial insect, but only in the larval stage. Once they become adults, they’re nothing but trouble” (PlanetNatural.com).

black bettle 2 



Planet Natural has a comprehensive list for control of blister beetles which I have abbreviated below with comments:





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