White Larvae on Melons: Identification and Barriers

Likely Culprits

White larvae on ripening melons = cucumber beetle larvae or rindworms (caterpillars). Sprays (even organic) often miss soil-dwelling stages.

Physical Barriers

• Straw mulch (4–6") under fruit—prevents soil contact.
• Plastic cradles (melon mats) or inverted pots.
• Cardboard/board under each fruit.

Biological Control

• Beneficial nematodes (Steinernema) applied to soil—target larvae.
• Chickens/ducks forage pests (if feasible).

Sanitation

Remove infested fruit immediately. Clean up all vines after harvest—pupae overwinter in debris.