Evergreen Bagworm

Natural Habitat

Found on a variety of host trees including juniper, cedar, arborvitae, and other evergreens or deciduous trees.

Diet & Feeding

Larvae feed on the foliage of host trees, primarily needles and leaves.

Behavior Patterns

Larvae construct spindle-shaped cases made of silk and plant debris for protection. They carry these cases as they feed. Females are wingless and remain in the bag for their entire life, while males develop into black moths.

Risks & Benefits

They are considered a significant landscape pest; heavy infestations can completely defoliate and kill host trees. They serve as a food source for some birds and parasitic wasps.

Identified on: 7/1/2026