A whole zucchini gray with slices surround on a white background
Gray Zucchini Summer Squash with blooms on dark background.
Gray Zucchini Summer Squash with shredded zucchini salad on gray background.
Gray Zucchini Summer Squash arranged with blooms and leaves on a mottled background.
A whole zucchini gray with slices surround on a white background
Gray Zucchini Summer Squash with blooms on dark background.
Gray Zucchini Summer Squash with shredded zucchini salad on gray background.
Gray Zucchini Summer Squash arranged with blooms and leaves on a mottled background.

Summer Squash Seeds,
Zucchini Gray

4.138 ReviewsSKU: #SSQ114
Price
Regular price $3.00
Regular price $0.00 Sale price $3.00
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Min. 20 seeds

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Description

(Cucurbita pepo). Great-tasting, high-quality, gray zucchini squash. Yields are very good; flesh is firm, mild, and very tasty. We have been getting favorable reports from customers about this squash. A real favorite.

Growing Tips: Gray zucchini squash, also known as Calabacita, is a beloved heirloom variety with smooth, pale green-gray skin and a rich, nutty flavor. It thrives in full sun and fertile, well-drained soil. This bush-type plant produces quickly and abundantly, especially with regular harvesting. Mulch to retain moisture and prevent weeds, and feed regularly for strong, healthy growth and steady yields.

Plant Details

Botanical Name
Cucurbita pepo
Life Cycle
Annual
Growth Habit
Bush
Sun Requirement
Full sun
Days to Germinate
5–10
Days to Maturity
45–55
Planting Depth
1 in.
Plant Spacing
24–36 in.
Ideal Temperature
70–95°F
Frost Hardy
No

Growing Guide

When to Grow

Sow Gray zucchini seeds directly outdoors once the soil reaches 70°F and all danger of frost has passed. In cooler climates, start indoors 2–4 weeks before the last frost and transplant after hardening off. If you’re not sure how to find your first and last frost dates, consult our blog post 'Our Experts Answer Questions, Share Resources.'

How to Sow and Plant

Plant seeds 1 inch deep in rich, well-draining soil in a sunny location. Space plants 24 to 36 inches apart in rows or hills. If starting indoors, use biodegradable pots and harden off seedlings before transplanting. Keep soil evenly moist during germination and early growth, and avoid overhead watering to reduce disease risk.

How to Grow

Water deeply at the base of the plant and mulch to conserve moisture. Fertilize every 3–4 weeks with compost or a balanced organic fertilizer. Harvest fruits when they are 5–7 inches long for best flavor and texture. Regular harvesting encourages continuous production. Monitor for pests like squash bugs and cucumber beetles and take preventive organic measures as needed.

How to Save Seeds

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 squash to fully mature on the vine until the skin is tough and pale gray.
  • 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.

FAQ

What makes Gray zucchini different from other zucchini?

Gray zucchini squash has a distinctive pale green-gray skin and a rich, slightly nutty flavor. It’s a favorite in Latin American cuisine and is prized for its tender texture and quick production.

Can I grow Gray zucchini in containers?

Yes, this bush-type variety is suitable for large containers (minimum 5 gallons). Use nutrient-rich soil, place the container in full sun, and water consistently for healthy growth and good yields.

When is the best time to harvest Gray zucchini?

Harvest when fruits are 5–7 inches long, while the skin is still tender and glossy. Frequent picking improves plant productivity and ensures the best texture and flavor in the kitchen.

Browse our full range of summer squash seeds.

Customer reviews

4.1 / 5 38 Reviews

What gardeners are saying

  • Heavy producer: Three plants feed a family; pick often or they balloon.

  • Early to bear: Often the first summer squash to produce in the garden.

  • Pretty plant and fruit: Silver-streaked leaves and pale striped fruit.

  • Takes the heat: Kept producing through drought and scorching summers.

  • Heads up: Squash bugs and borers go for it; some plants set few fruit.

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