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Zeedman · April 2, 2016

Look up the predatory wasp Pediobius foveolatus, which attacks the bean beetle larvae. There have been some good discussions regarding their use on other forums. You can find a list of potential sources here: http://www.ct.gov/caes/cwp/view.asp?a=2815&q=376726

The only bad news is that the wasps seldom survive over winter, so must be purchased each year. Like most predatory insects, it requires a certain population size of their target host to sustain them & keep them from moving elsewhere... so they would be most effective for large plantings, or if other beans (and soybeans) are grown nearby.

April 2, 2016	#2
Zeedman Tomatovillian™ Join Date: Dec 2011 Location: Wisconsin Posts: 313	Look up the predatory wasp Pediobius foveolatus, which attacks the bean beetle larvae. There have been some good discussions regarding their use on other forums. You can find a list of potential sources here: http://www.ct.gov/caes/cwp/view.asp?a=2815&q=376726 The only bad news is that the wasps seldom survive over winter, so must be purchased each year. Like most predatory insects, it requires a certain population size of their target host to sustain them & keep them from moving elsewhere... so they would be most effective for large plantings, or if other beans (and soybeans) are grown nearby. Last edited by Zeedman; April 2, 2016 at 03:37 PM.