Answer: Roly Poly zucchini should be harvested when it's still green, and 4-5 inches in diameter. If left on the vine the squash will become overmature, turn orange, and develop a hardened shell. It will also taste watery. Zucchini, whether long or round, has a very mild flavor - some people prefer it to other varieties - but it's a matter of personal taste. To keep your plant producing, keep the small squash harvested. If squash is allowed to become overmature, the plant will put all of its energy into developing seeds instead of growing more vine, blossoms and additional fruit.
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