When should I plant Zucchini in Zone 4b?

Start Zucchini seeds indoors around Apr 3. Transplant outdoors after May 15. Expect first harvest around Jun 19.

What is the last frost date for Zone 4b?

The average last spring frost date for Zone 4b is May 1. The first fall frost averages Oct 5, giving a 157-day growing season.

Can I grow Zucchini in Zone 4b?

Yes. Zucchini needs 50 days to harvest. Zone 4b has a 157-day growing season, which is sufficient. You can plant up to 5 successions.

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🥒 Growing Zucchini in Zone 4b

Zone 4b has cold winters and a moderate growing season. Timing is key for Zucchini in this zone. Sista frost: May 1. Första frost: Oct 5.

Planting Calendar

Indoor

Outdoor

Harvest

Apr 3Oct 5

Season: May 1 – Oct 5 (157 dagar) · Succession: plant every 3 weeks (up to 5x)

Zon4b

Sista frostMay 1

Första frostOct 5

Säsong157 dagar

Skörd50 dagar

SolFull Sol

When to Plant Zucchini in Zone 4b

Start Seeds Indoors: Apr 3

Start Zucchini seeds indoors around Apr 3 (4 veckor före sista frosten). Optimal germination temperature: 85F. Germinates in 4-10 days.

Transplant Outdoors: May 15

Transplant Zucchini seedlings outdoors after May 15. Wait until soil temperature reaches 65F. Space plants at 1/m² (30cm avstånd). Harden off plants for a week before moving outside.

Harvest: Jun 19

First harvest approximately Jun 19 (~35 dagar from transplant). Continue harvesting until first frost (Oct 5).

Fall Planting: Jul 27

For a fall harvest, plant Zucchini around Jul 27 (10 weeks before first frost).

Samplantering

✅ Majs✅ Bönor✅ Krassar✅ Honungsfacelia

❌ Potatisar

Zucchini in Other Zones

1a 1b 2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b 12a 12b 13a 13b

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