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Problem: Asparagus Beetle - Crioceris asparagi
Host Plants: Asparagus
Description: Asparagus beetle overwinters as an adult in trash near the garden. Asparagus beetle adults are a blue/black beetle with a red prothorax with yellow spots. The larvae are a soft, greenish grub. Both feed on asparagus spears by chewing the tips and spear surfaces -- leading to scarring and staining of the spears. Eggs are laid on developing spears with the eggs being small, elongated and black - sticking out longways from the side of asparagus spears.
Recommendations: Early control of beetles is important to reduce feeding damage later. Rotenone, malathion, or Sevin will provide control (a one-day wait before harvest is required).
References:
1. Hort '97 K-State Research and Extension Newsletter, May 14, 1997
2. A Gardener's Guide to Common Insect Pests, Rodale Press, pg 7
Last Updated: 03/28/2003
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