Terri Pine wrote:Depends. Watermelon, you wait until the belly spot turns from pale green to yellow. Some cantaloupes "slip" from the vine, and some don't. Irish potatoes, you dig when the greenery is about half yellow. Sweet potatoes, you dig right before the first frost. Yellow summer squash, watch it turn from pale yellow to bright yellow, then jump backwards in time a day or so. And so on.
Skandi Rogers wrote:any size you like, if you leave them on the plant the skin will harden and they store for a couple of months. But the plant will not produce more.