Caterpillars in cole crops: IPM guide

This resource was developed as part of a 12-guide series for small-scale vegetable and berry farmers in the Fraser Valley and Lillooet-Pemberton areas. Growers in other regions of BC may also find the information applicable to their local conditions.

Three main species of caterpillars affect cole crops in BC: the imported cabbageworm (Pieris rapae), the cabbage looper (Trichoplusiani) and the diamondback moth (Plutellaxylostella). Larvae feed on the foliage and heads of cole crops, which creates holes that affect the quality of the crop and sometimes results in stunted plants.

This guide contains integrated pest management (IPM) information tailored for small-scale production, but the guidelines can be applied to all operation sizes. It includes:

  • Identification and lifecycle details including photographs of pest phases
  • Information about how and when to monitor
  • Options for biological, cultural, physical and chemical control


IPM Guide - Caterpillars in Cole Crops - 2021

1 MB, pdf