We are a bit stumped at a plant that came up in our garden. For a long time, we thought it was a honeydew melon, but I cut one, and it had the flavor of a cucumber. Is it a squash that has grown larger than it should have? There were only two of these on the entire plant, and both fruits grew very large.
The leaves look more like a watermelon. Did the plant grow from a seed left over from last year? If so, it could be a cross between a cucumber, squash, watermelon, etc. -- members of the cucurbit family will cross pollinate and the resulting seeds can give you some pretty interesting fruits. It should be safe to eat, and you may like the flavor, or not.