55-65 days. Golden Zucchini Summer Squash Seeds. Cucurbita pepo. Annual. Open Pollinated. Non-GMO Heirloom Golden Zucchini is the summer squash to grow in the garden. it's ready in 55 days and beginner-friendly. Not as productive as green varieties, but beautiful golden yellow fruits make it all worth it. Plus, Golden Zucchini is easy to spot under all the greenery. Pick this variety at 6-8" long for the best taste. Zucchini is a crop that produces all summer until frost. Approx 258 seeds/oz.