Flea Beetles: Identification, Control & Prevention

Flea beetles—tiny, shiny, large hind legs, jump like fleas—attack many vegetable crops. 1/16" long. Eggs at stem bases early summer; larvae feed roots; adults chew "shotholes" in foliage.

Identification

Black to tan, solid or spotted. Tiny; visible if approached quietly; spring away when disturbed. Overwinter in brush/woods; emerge at ~50°F.

Damage

Round shotholes in leaves, worst on young seedlings (lacy appearance). Established plants tolerate feeding, but beetles spread bacterial wilt and blight—control immediately.

Control

• Homemade spray: 2 parts rubbing alcohol, 5 parts water, 1 tbsp liquid soap.
• Talcum powder dust repels on tomatoes, potatoes, peppers.
• White sticky traps catch jumping beetles.
• Early-season insecticides if needed; consult nursery/extension.

Prevention

• Delay planting 2 weeks to starve early emergers.
• Fall tilling exposes overwintering beetles.
• Row covers (sealed) immediately after transplant.
• Catnip/basil repel; nasturtium/radish trap.
• Attract beneficial insects that prey on flea beetles.