Squash and cucumber have both male and female flowers. You need a bee to come along for these and at the right time. The blooms have to be in the mood. But you can produce with only one plant. To be more successful with one plant, or many for that matter, you can help out with hand pollinationOk, you've got... Looks like cucumber and squash. And corn of course. But pull that corn, it has already tassled and has no ears on it, it's a dud. Corn is a wind pollinator, if there is no other corn growing, no ears will develop. And don't step on the vines of the other plants or they can die. And unless you have a lot of those growing, I doubt anything will develop on them either. You need a male and female plant to pollinate to produce anything. Sorry, don't mean to be a debby downer, just being real
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