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Horseradish-Cabbage flea beetle Phyllotreta cruciferae Pest description, crop damage and life history See: Common Pests of Vegetable Crops Pest monitoring Monitor fields for flea beetles soon after transplanting or as seedlings emerge. Flea beetles attack ...

Horseradish-Cutworm Includes Black cutworm (Agotis ipsilon) Variegated cutworm (Peridroma saucia) Pest description, crop damage and life history See: Common Pests of Vegetable Crops Management-cultural control Weed control is important. Lambsquarters and ...

Horseradish-Diamondback moth Plutella xylostella Pest description, crop damage and life history See: Common Pests of Vegetable Crops Pest monitoring Natural enemies and insecticides applied to control other pests keep the diamondback moth under satisfacto ...

Horseradish-Imported cabbageworm Pieris rapae Pest description, crop damage and life history See: Common Pests of Vegetable Crops Pest monitoring The following information is from California but is generally applicable in the Pacific Northwest: Cabbagewor ...

Horseradish-Wireworm Limonius spp. Pest description, crop damage and life history See: Common Pests of Vegetable Crops Management-biological, cultural, tactical See: Potato, Irish-Wireworm Management-chemical control: HOME USE bifenthrin (as a mix with ze ...

Kale-see Collard and kale Kale-see Collard and kale ...

Kohlrabi-Aphid Includes Cabbage aphid (Brevicoryne brassicae) Turnip aphid (Hyadaphis pseudobrassicae) Pest description and crop damage The cabbage aphid is gray-green with a waxy bloom. It forms dense colonies that cannot be removed before processing or ...

Kohlrabi-Armyworm and looper Includes Beet armyworm (Spodoptera exigua) Bertha armyworm (Mamestra configurata) Western yellowstriped armyworm (Spodoptera praefica) Alfalfa looper (Autographa californica) Cabbage looper (Trichoplusia ni) Pest description, ...

Kohlrabi-Cabbage maggot Delia radicum Pest description, crop damage and life history See: Common Pests of Vegetable Crops Pest monitoring Once the crop emerges, watch for wilting, lighter green plants, or reduced growth that may indicate a maggot infestat ...

Kohlrabi-Cucumber beetle Western spotted cucumber beetle (Diabrotica undecimpunctata) Western striped cucumber beetle (Acalymma trivittatum) Pest description, crop damage and life history See: Common Pests of Vegetable Crops Management-chemical control: H ...