Potato Tuberworms

Pest Type: Insect

Damage to Plant: Tunneling spoils tubers and fruit and causes shoots to wilt and die. If potato eyes turn pink with excrement, your crop is infested.

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A pinkish white, 1/2 inch long caterpillar with a brown head, this pest tunnels into the stems, tubers, and fruit of its target plants. It’s a problem in the southern half of the United States.

Life Cycle: Small, narrow-winged, brown moths crawl through cracks in the soil to lay eggs on growing tubers; they also lay eggs on leaf undersides, debris, and soil. After feeding, the caterpillars pupate in debris or amid stored tubers. There are up to six generations a year.

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