Black Zucchini Summer Squash (Heirloom, 50 Days)
The Black Zucchini Summer Squash is a 1931 Heirloom. Yields aren’t as large as with the hybrids, but still provide plenty of squash for the average family. Flavor is unsurpassed. This variety was originally listed by the Jerome B. Rice Seed Company in 1932.
Germination: 4-10 days
Germination Temperature: Optimum soil temperatures 70-85ºF
Seed Sowing Depth: 1/2-1" deep
Sowing Indoors: 3-4 weeks before the last frost. Provide 70-85ºF soil temperature. Sow 2-3 seeds per cell/pot. Sowing into individual biodegradable peat/cow pots reduces root damage when transplanting. Transplant 36-48" apart after last frost.
Sowing Outdoors: Sow after the last frost when the soil temperature is over 70ºF. Sow a few seeds every 36-48".
Harvest: Check and harvest a few times a week. Cut or kindly twist off fruit, starting at 3-4”.
Tips: Plant Black Zucchini Summer Squash in fertile soil, amended with compost or well-rotted manure, and keep well watered. They benefit from growing on black plastic and by using row covers for weed, insect control, and more rapid growth.