Cucumber Seeds F-1 Hybrid US-7070Overview Cucumber is especially a warm season crop. This is very sensitive to frost. Excess humidity promotes diseases like powdery mildew and downy mildew. The optimum temperature range for cucumber production is between 16 and 32C. Seed of cucumber germinates well at 25C Variety Details Vigorous Growing With Side Branches Providing High Yield Fruit Uniform Deep Green Thick Small Seed Cavity Dia 4. 5 5. 0 cms Average length 30cms Average weight