Squash Seeds - Japanese, Winter - Tetsukabuto - Hybrid. Non-GMO. Cucurbita maxima X Cucurbita moschata. 95-105 days (45-50 days after flowering). Warm season annual. This Japanese winter squash hybrid produces nearly round fruit. Fruit weigh between 4.4 to 5.5 lbs. Under the dark black-green mottled skin, the firm flesh is a deep yellow orange color with an excellent sweet, nutty flavor. Approximately 150 seeds / oz.