Onions, Garlic: Basal rot categories: Onions, Garlic Onions, Garlic Diseases Vegetables last review date: 2022-12-07 12:00 Onion basal rot in early season Photo by: L.J. du Toit Biology Basal rots of onion, garlic, and related species are caused by fungi. Affected plants are yellowed, wilted, and grow poorly. Reddish discoloration may be present on affected […]
Onions, Garlic: Downy mildew categories: Onions, Garlic Onions, Garlic Diseases Vegetables last review date: 2022-12-07 12:00 Downy mildew on onion Photo by: R.S. Byther Biology Downy mildew is a fungal disease affecting onions and related species, including weedy species. Leaves initially develop pale, elongate patches. The spots may be water-soaked at first, then later appear […]
Onions, Garlic: Gray mold categories: Onions, Garlic Onions, Garlic Diseases Vegetables last review date: 2024-06-05 02:07 Botrytis gray mold on onion Photo by: R.S. Byther Biology Gray mold is a fungal disease primarily found on garlic. It attacks the tissues of the neck and bulb and occasionally causes a leaf blight. Symptoms of infection typically […]
Onions, Garlic: Neck rot categories: Onions, Garlic Onions, Garlic Diseases Vegetables last review date: 2022-12-07 12:00 Onion neck rot symptoms Photo by: L.J. du Toit Biology Neck rot is a fungal disease which can affect onions and related species. Infection typically occurs in the field, but symptoms often do not appear until bulbs are in […]
Onions, Garlic: White rot categories: Onions, Garlic Onions, Garlic Diseases Vegetables last review date: 2022-12-07 12:00 Sclerotia on surface of white rot-infected bulbs Photo by: R.S. Byther Biology White rot is a fungal disease which affects onions and related species. Cool, wet conditions may be followed by wilting and yellowing of leaves beginning at the […]
Onions, Garlic: Onion maggot categories: Onions, Garlic Onions, Garlic Insects Vegetables last review date: 2022-12-07 12:00 Onion maggot and damage Photo by: E.P. Breakey Biology The onion maggot is the larvae of a slender gray fly about 1⁄4″ in length. Female flies lay eggs near the base of host plants including onion, garlic, leek, and […]
Onions, Garlic: Onion thrips categories: Onions, Garlic Onions, Garlic Insects Vegetables last review date: 2025-04-16 07:35 Onion thrips Photo by: Unknown Biology Onion thrips are tiny, slender insects about 1⁄16″ long. They are yellowish to dark in color, depending on age. They feed on tender inner leaves, causing longitudinal silvery to white mottling or streaking […]