The fruits are supposed to be edible by humans when they are green, but not when they are black/ripe. Some say they taste just like or even better than a cucumber, others say it's like a cross between a melon and a cucumber, still more say it's the taste of a cucumber with a hint of lime.
If you aren't as lucky as I am to having them growing wild in the yard, you can purchase the seeds from Baker Creek Heirloom Seeds, where they are called Mexican sour gherkin cucumbers. The listing at Baker Creek gives planting and growing information; they are supposed to be as easy to grow as cucumbers. Be sure to give your plants a trellis of some sort to climb on, and enjoy your cucamelons in salads, pickled, or right off the vine.
Mine are just beginning to ripen and I'm anxious to try one. I think the goats won't get their treat this year.
Disclaimer: Any information about edible wild plants is for educational purposes only. Sample such things at your own risk.
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