Corn: Root, stalk, and ear rots Categories: Corn Corn Diseases Vegetables Last review date: 2025-10-30 12:18 Last edit date: Corn stalk rot causing brown decayed roots Photo by: OSU slide library Biology Several fungi cause rots of roots, stalks, and ears of corn. These fungi may be carried on the seed and may result in […]
Corn: Seed rot and seedling blight (damping-off) Categories: Corn Corn Diseases Vegetables Last review date: 2025-10-31 11:02 Last edit date: Damping-off of cucumber seedlings Photo by: R.S. Byther Biology Several fungi can cause seed rots and seedling blight of corn. These can be carried on the seed or can overwinter in the soil or infected […]
Corn: Smut Categories: Corn Corn Diseases Vegetables Last review date: 2025-10-31 11:28 Last edit date: Corn head smut Photo by: R.S. Byther Biology Two types of smut occur on corn in the Pacific Northwest. Both are fungal diseases. Common smut may occur on any above-ground portion of the plant, causing gall-like swellings. The galls are […]
Corn: Brown marmorated stink bug Categories: Corn Corn Insects Vegetables Last review date: 2026-09-29 06:57 Last edit date: Brown marmorated stink bugs feeding on corn, damage to kernels Photo by: Gerald Brust, Univ of Maryland Biology The brown marmorated stink bug (BMSB) is an introduced pest species from Asia that is spreading quickly across the […]
Corn: Corn aphids Categories: Corn Corn Insects Vegetables Last review date: 2026-09-29 06:57 Last edit date: Corn aphids on sheath Photo by: Unknown Biology Aphids are small, soft-bodied, pear-shaped insects. They may vary in color from yellow to green to dark. Aphids typically feed in colonies on the leaves, often preferring the newer growth. Infested […]
Corn: Corn earworm Categories: Corn Corn Insects Vegetables Last review date: 2026-09-29 06:57 Last edit date: Corn earworm damage Photo by: A.L. Antonelli Biology The corn earworm is the caterpillar of a light to dark brown moth with a 1 1⁄2″ wingspan. The caterpillars are up to 1 1⁄2″ long at maturity. They vary widely in color, but […]
Corn: Cutworms and armyworms Categories: Corn Corn Insects Vegetables Last review date: 2026-09-29 06:57 Last edit date: Tan armyworm caterpillar Photo by: K. Grey Biology Cutworms and armyworms are the larvae of noctuid moths. These common moths are medium-sized with fairly dull coloration. The greenish, grayish, or tan caterpillars are hairless, nocturnal, and generally spotted, striped, […]
Corn: Earwigs Categories: Corn Corn Insects Vegetables Last review date: 2025-10-30 02:36 Last edit date: Adult European earwig Photo by: M. Bush Biology Earwigs are reddish-brown insects about 3⁄4 inch or less in length. Both males and females have pincers at the rear end. Earwigs are largely beneficial, feeding on many pests such as aphids, […]
Corn: Spider mites Categories: Corn Corn Insects Vegetables Last review date: 2025-10-30 02:34 Last edit date: Spider mite damage on leaf Photo by: A.L. Antonelli Biology Spider mites are tiny, eight-legged mites which may range in color from yellowish to green or red. They typically feed on the underside of leaves, causing a yellowish to […]
Corn: Western spotted cucumber beetle Categories: Corn Corn Insects Vegetables Last review date: 2026-09-29 06:57 Last edit date: Western spotted cucumber beetle Photo by: K. Grey Biology The western spotted cucumber beetle is a pest of many ornamentals and vegetables. About 1⁄4″ long, the adult beetles have yellow wing covers with black spots. The rest […]