Summer Squash Seeds,
Zucchini Golden

Sow Golden zucchini seeds outdoors after the last frost date when soil temperatures are consistently above 70°F. In cooler climates, start seeds indoors 2–4 weeks early and transplant when frost risk has passed. If you’re not sure how to find your first and last frost dates, consult our blog post 'Our Experts Answer Questions, Share Resources.'

Plant seeds 1 inch deep in rich, well-draining soil in a sunny location. Space plants 24 to 36 inches apart to allow for proper air circulation. If starting indoors, use biodegradable pots and harden off seedlings before transplanting. Keep soil moist during germination and avoid overhead watering to reduce the risk of disease.

Water consistently and deeply at the base of the plant. Mulch around plants to retain moisture and control weeds. Fertilize every few weeks with compost or a balanced organic fertilizer. Harvest fruits regularly when they are 6–8 inches long to ensure tender texture and steady production. Monitor for pests such as squash bugs and cucumber beetles.

Note that there are four different species of squash: Cucurbita maxima, C. pepo, C. moschata, and C. mixta. They will not cross pollinate with each other, so it is possible to grow one of each species for seed saving without worrying about cross pollination. If you are planning to save seeds from several varieties of the same species, you can bag the blossoms and hand pollinate to avoid crossing.

• Allow fruits to mature fully on the vine until the skin is hard and color deepens.
• Harvest mature squash and cure in a warm, dry space for 2–3 weeks.
• Cut open the fruit and scoop out seeds.
• Rinse seeds to remove all pulp and residue.
• Spread seeds out in a single layer to dry in a well-ventilated area for 2–3 weeks.
• Store dried seeds in a labeled, airtight container in a cool, dry place.