'Costata Romanesco' delivers a manageable harvest of high-quality, fluted fruits with complex flavor and firm texture. The striped and mottled skin stays tender even to 18", though in Italy they are picked at 4"-5" with the blossoms still attached. Large production of male blossoms for stuffing.
1.5g (~12 seeds)
This squash stays firm when you cook it, instead of turning into mush like many zucchinis do. And it has a delicious nutty flavor. We didn't pick ours until it was about 8" long, and it was perfect. It has the bonus of looking pretty cut into rounds, because of its "flutes."