Maine Organic Farmers and Gardeners Association
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Controlling Asparagus Beetles


May 22, 2015

Do asparagus beetles populate your asparagus crop? Here's a cultural control from MOFGA's organic crop specialist, Eric Sideman: "During harvest, you can greatly reduce the population by harvesting ALL of the ready spears every harvest. Do not allow any spears to develop into fronds until you are all done harvesting for the season. This reduces the number of stems where eggs will survive, and larvae can feed and grow up into the summer-generation beetles. In the fall remove all of the crop residue and other refuse nearby that provides shelter for adults to overwinter. Maintaining a clean environment in the fall will force beetles to seek shelter outside the field or burrow in the soil, where many predators reside." Read more in Sideman's pest report and sign up for MOFGA pest reports on

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