Salt Marsh Caterpillar

Natural Habitat

Widely distributed throughout North America in gardens, forests, salt marshes, and agricultural fields.

Diet & Feeding

Broadly polyphagous; they feed on a wide variety of weeds and crops including cabbage, cotton, corn, and many ornamental plants.

Behavior Patterns

Active during the day and night. They are known to 'wander' significant distances when searching for new food sources or pupation sites. They overwinter as pupae in a cocoon made of silk and their own larval hairs.

Risks & Benefits

Generally harmless to humans, though the stiff hairs can cause mild skin irritation for sensitive individuals. They are considered minor agricultural pests but serve as a food source for birds and parasitic wasps.

Identified on: 2/16/2026