The only zucchini, or summer squash, I grow is the fabulous heirloom, Costata Romanesco. There is simply no better tasting zucchini. The plants are vigorous and productive. And perhaps most importantly, Costata Romanesco is still tender and delicious even when it gets much larger than the optimal 8 inches. Check out 12 Ways to Make a Zucchini Surplus Disappear.