Yellow or green patches (mottling) on the leaves Can spread rapidly, causing plants to yellow and die May be on upper and lower surfaces starts mid-summer on older leaves. Starts on older leaves in early to late summer Yellow, angular spots on upper leaf surface, with gray fuzzy spots on the undersides Centers of the spots may drop out and leave ragged holes Spots may be round or irregular, angular-shaped. Pale yellow, tan, or gray spots on leaf surfaces Mites can be seen on leaf undersides with the naked eye or hand lens Leaves may eventually appear tattered, yellow Small yellow-green or white spots on leaves (stippling) This table includes the most common problems of cucumbers described above, as well as minor, occasional problems of lesser significance.
Grow a variety of flowering plants around your garden to support beneficial insects predators and parasitoids help provide natural pest control.When flowers open, remove covers to allow bees to transfer pollen from male to female flowers (except for parthenocarpic varieties that do not require pollination). Using a row cover or micromesh to protect plants from pests prior to flowering.Giving plants adequate space in a sunny location to allow for good air circulation and minimize leaf wetness.Numerous options are available for fresh eating (slicing) or pickling cucumbers. Growing disease-resistant cucumber varieties.To help prevent some of the most common problems, we recommend:
#Cucumber plant blight how to#
Use this picture guide (or the table below) to identify the most common problems of cucumbers in Maryland gardens and how to address them. All are vulnerable to similar diseases and pests, while some problems are more prevalent among cucumbers in particular. They are a member of the gourd family (Cucurbitaceae or “cucurbit”) and share characteristics with related vegetable plants: squash, zucchini, melons, and pumpkins. Cucumbers ( Cucumis sativus ) are warm-season annual plants that are popular to grow in home gardens.
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