All you need to know:
For those who care ? cucumbers are sensitive to cold which can make them abort young forming cucumbers, and set the plant back weeks before recovering, so early planting is risky and those planted out later will soon catch up, the reference in the link to nightime temperatures has to assume you have heating in the greenhouse, if not don’t rush to plant and no my cucumber seeds have not been planted yet.
It’s a science.
Goody, goody, only a few months to cucumber sandwiches.
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