Zucchini / summer squash: Spacing, Yield & Planting Dates
Plant count & yield calculator
Pre-filled for this crop — adjust bed size or pick a different vegetable.
Enter bed size to count plants.
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Seed starting dates
Pre-filled last frost — change the date to rebuild the full crop schedule. For Zucchini / summer squash with this frost date : start indoors ~Mar 25, transplant ~Apr 29, direct sow ~Apr 22 .
Pick a last frost date for the schedule.
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Show the math & assumptions
Assumptions and formulas will appear here once you calculate.
About zucchini / summer squash
Zucchini is the archetypal prolific garden crop, producing so heavily that a few plants supply a household with sauteing, baking, and grilling squash all summer.
Spacing & yield
Zucchini / summer squash wants 24×48 inches and about 9 lb per plant at ~55 days to maturity.
Growing tips
- Plant only 2-3 hills per household; one plant can produce 6-10 lb.
- Harvest fruit at 6-8 inches for best texture and to keep the plant producing.
- Hand-pollinate early morning if fruit aborts due to poor pollinator activity.
- Rotate planting sites yearly to reduce vine borer pressure.
Common mistakes
- Planting too many hills — even 3 plants yield over 25 lb per season.
- Allowing fruit to grow into giant baseball bats, which depletes the plant.
- Ignoring squash vine borers; watch for frass at the base and intervene early.
Harvest & storage
Cut fruit with a knife when 6-8 inches long, roughly 55 days from seed.
Refrigerate unwashed for up to one week; summer squash does not store long-term like winter varieties.
Companion planting
Good neighbors for zucchini / summer squash: corn, beans, nasturtium, radish. Avoid planting beside: potatoes, pumpkins.
Planting calendar
Start indoors about 3 weeks before last frost, then transplant 2 weeks after frost. Direct sow is also an option around 1 weeks after frost. Use the seed-starting calculator above with your real county frost date — the April 15 default is only a worked example (zone 6 style).
Estimates only — consult your local extension office for advice specific to your land and animals.
Frequently asked questions
- How much space does zucchini need?
- Allow 24 inches between plants and 48 inches between rows; bush types can fit slightly tighter.
- How much zucchini does one plant make?
- A single plant yields about 9 lb of fruit across the season, which is roughly 20 medium squash.
- How quickly does zucchini mature?
- First harvest arrives about 55 days after planting — one of the fastest returns in the summer garden.