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Watercress-Aphid Includes bean aphid (Aphis fabae) Pest description and crop damage The bean aphid is dark olive green to black with light-color legs. It is usually more of an early-year pest. Aphids damage plants by sucking plant sap, which causes heavil ...
Watercress-Flea beetle Includes cabbage flea beetle (Phyllotreta cruciferae) Pest description, crop damage and life history See: Common Pests of Vegetable Crops Biology and life history Most flea beetle species have similar life cycles. Adults overwinter ...
Watercress-Lepidoptera larvae Includes Beet armyworm (Spodoptera exigua) Cabbage looper (Trichoplusia ni) Diamondback moth (Plutella xylostella) Imported cabbageworm (Pieris rapae) Pest description, crop damage and life history See: Common Pests of Vegeta ...
Potato, Irish-Aphid Includes Green peach aphid (Myzus persicae) Potato aphid (Macrosiphum euphorbiae) Note: Over 30 species of aphids can be found in potato fields; many are considered non-colonizing. Pest description and crop damage Aphids are soft-bodie ...
Potato, Irish-Blister beetle Includes Epicauta spp. Pest description and crop damage Adults feed on the leaves, causing a ragged appearance. Adults are 0.5 inch long, gray to black, with narrow and elongate bodies and conspicuous heads and necks. The pron ...
Potato, Irish-Colorado potato beetle Leptinotarsa decemlineata Pest description and crop damage The Colorado potato beetle (CPB) is a yellow and black striped beetle, about 0.5 inch long and 0.25 inch wide. Larvae are reddish orange, with two rows of blac ...
Potato, Irish-Cucumber beetle Western spotted cucumber beetle (Diabrotica undecimpunctata) Pest description and crop damage Larvae may feed on tubers in potato fields west of the Cascade Mountains. Adults are 0.33 inches long, yellowish green, with distin ...
