Quick Question: Can I pollinate across my courgette plants

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For example for a male flower from another plant to pollinate a female flower from another plant?

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yes, you can, but why would you want to?

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I want to do it because whenever a female flower is produced on one plant there are no other male ones, but they are male ones on another plant.

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I want to do it because whenever a female flower is produced on one plant there are no other male ones, but they are male ones on another plant.

The insects will do this for you. Unless you want to specifically cross-pollinate the two plants.