I think cukes need insects to pollinate . You mite could take a cotton swab and pollinate them if you are not growing too many . I always wondered how tomato's pollinate in a greenhouse . I read up on it and supposedly tomato's are self pollinator's . Tomato flowers point downward for the most part . So the pollen falls from the stem end to the tip of the flower . I read it on the internet so it got to be true......Anyways I'll be growing a few in a greenhouse next winter and try a couple cukes too....
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