The spotted cucumber beetle is notorious for spreading cucumber bacterial wilt. Body is ¼" long, yellowish green with 12 distinct black spots on its wings. Larvae grow to ½" long. The striped cucumber beetle is ⅕" long with yellow-and-blackstriped wings. Their preferred foods: cucumbers, beans, melons, squash, pumpkins, corn and eggplant. Beetles lay their eggs in the ground near the base of the plant on which they feed. The larvae, also called southern corn rootworms, tunnel through vegetable roots, feeding for 2-4 weeks. Injured plants turn yellow and break off. Adult beetles end hibernation in the spring and suddenly appear in large numbers on vine and bean crops. Leaves are riddled and turn yellow.
Apply kaolin clay in early summer prior to beetle infestation. Continue application every 7-14 days until harvest. Reapply after heavy rains. For adult beetles, use pyrethrins and rotenone. Kaolin clay can be tank-mixed with pyrethrins and rotenone, if cucumber beetle pressure is heavy. We recommend Surround At Home Crop Protectant. For larvae, apply Grub-Away Nematodes. Super-Light Insect Barriers shield plants up to blossom time, when the covers must be removed for pollination.