How to Manage Pests
Pests in Gardens and Landscapes
Cypress bark moths—Laspeyresia cupressana and Epinotia hopkinsana
Larvae of cypress bark moths are up to 0.5 inch long and feed under the bark, in cones, or on foliage.
Branches are killed, sometimes to the trunk. Coarse boring dust is seen at trunk wounds and branch crotches.
Larvae are often seen colonizing cypress cankers, but they do not cause the cankers.
Provide plants with proper cultural care. Avoid excess water and fertilizer, which promote rapid growth
and susceptible thin bark. Avoid wounding bark. Control is not usually warranted.
Red frass on branch; larval emergence hole in cone
Bark moths colonize cypress canker