Cucumber Leaves are drying and shriveling - Knowledgebase Question

Kensington, CT
Avatar for laplasc
Question by laplasc
July 25, 2005
Cucumber leaves appear to have a gray dust on them that looks a little like mold. Then the leaves shrivel and droop shrivel and dry up. What is this and how can I correct the situation?

Answer from NGA
July 25, 2005
Based on your description it sounds like there is a fungal infection at work. These can occur when weather conditions are favorable to them, or if the plants are overly crowded or in a spot where air circulation is not good. Evening watering can also encourage their development. Oddly enough, this sounds like powdery mildew which tends to happen in dry hot weather. Avoid handling the plants when they are wet but do remove infected leaves and discard them in the trash. Sometimes an early infection of this can be rinsed off with a spray of water from the garden hose. You may also be able to control it with a sulfur based spray, be sure to read and follow the label instructions.

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