Zucchini
Cucurbita pepo
Zucchini is a bushing summer squash that produces heavily when picked small in roughly 45–60 days from sowing. Warm soil, steady moisture in the high water class, and frequent harvest keep plants flowering, while oversized fruit drain energy and hide developing squash under large leaves. Tender plants wait until two to four weeks after the last frost.
Plant family Cucurbitaceae · Also called courgette
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Sow bush hills after frost.
Sow 2.5 cm deep outdoors two to four weeks after the last frost, or start indoors 3–4 weeks before frost. Germination is 4–10 days.
Tender plants need frost-free nights. Succession every 21 days can replace tired midsummer plants in long seasons.
Use this range as a planning baseline and adjust for local conditions.
Use this range as a planning baseline and adjust for local conditions.
Use this range as a planning baseline and adjust for local conditions.
Use this range as a planning baseline and adjust for local conditions.
Give each plant a wide footprint.
Allow 60–90 cm between plants with rows about 120 cm. Bush habit is more compact than vining pumpkins but still sprawls.
Containers need 40 cm depth and about 40 litres. One plant per large pot is typical.
Core measurements
Crop-level planning range.
Crop-level planning range.
Crop-level planning range.
Crop-level planning range.
Allow for the mature form of the selected variety.
Install support early when it is required or useful.
Water heavily during fruit set.
Eight hours of direct sun supports rapid fruit set. Shade reduces flowers and encourages mildew on damp leaves.
High water at 35–50 mm weekly with pH 6.0–7.0. Even moisture prevents blossom end issues common in fluctuating soil.
Sunlight
Full sun preferred (8+ direct-sun hours/day)
Soil pH
A suitable acidity range for general growth.
Weekly water
High water need.
Keep soil consistently moist but not waterlogged, especially during establishment and harvest development.
Pick small fruit to keep plants producing.
Fruit is ready in 45–60 days from sowing. Pick at modest size for best texture; the key tip stresses frequent harvest.
Missed fruits become marrow-like and slow new production. Check under leaves daily at peak season.
Read with the full crop profile.
Read with the full crop profile.
Read with the full crop profile.
Read with the full crop profile.
Harvest fruit frequently at a small size to maintain quality and continued flowering.
Zucchini growing questions
Why harvest zucchini small?
Frequent small harvest maintains quality and continued flowering per the key tip.
Is zucchini a vine or bush?
Growth habit is bush, with closer spacing than large vining pumpkins.
Can zucchini be succession planted?
A 21-day succession interval is listed to replace declining plants.
When can zucchini seed go outdoors?
Two to four weeks after the last spring frost, or indoor start 3–4 weeks before frost.
Profile values are crop-level planning ranges compiled from sources S1,S2,S4. Local climate and variety can change actual results.
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