Utah State University Extension
This fact sheet contains information about pests and diseases that affect cole crops. Cole crops are plants that belong to the mustard (Brassica) family, including hardy, cool-season crops such as broccoli, kohlrabi, cabbage, rutabaga, cauliflower, kale, Brussels sprouts, and turnips. The fact sheet offers general information and guidance on severity, other hosts, symptoms, and management.
Volesky, Nick and Murray, Marion, "The Backyard Garden - Cole Crops Pests" (2021). All Current Publications. Paper 2240.