When should I plant Gresskar in Zone 3b?

Start Gresskar seeds indoors around Apr 17. Transplant outdoors after May 29. Expect first harvest around Jul 13.

What is the last frost date for Zone 3b?

The average last spring frost date for Zone 3b is May 15. The first fall frost averages Sep 22, giving a 130-day growing season.

Can I grow Gresskar in Zone 3b?

Yes. Gresskar needs 55 days to harvest. Zone 3b has a 130-day growing season, which is sufficient. You can plant up to 3 successions.

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🟡 Growing Gresskar in Zone 3b

Zone 3b has harsh winters and a short growing season. Start Gresskar early indoors to maximize your harvest window. Siste frost: May 15. Første frost: Sep 22.

Planting Calendar

Indoor

Outdoor

Harvest

Apr 17Sep 22

Season: May 15 – Sep 22 (130 dager) · Succession: plant every 3 weeks (up to 3x)

Sone3b

Siste frostMay 15

Første frostSep 22

Sesong130 dager

Høst55 dager

SolFull Sol

When to Plant Gresskar in Zone 3b

Start Seeds Indoors: Apr 17

Start Gresskar seeds indoors around Apr 17 (4 uker før siste frost). Optimal germination temperature: 85F. Germinates in 4-10 days.

Transplant Outdoors: May 29

Transplant Gresskar seedlings outdoors after May 29. Wait until soil temperature reaches 65F. Space plants at 1/m² (30cm avstand). Harden off plants for a week before moving outside.

Harvest: Jul 13

First harvest approximately Jul 13 (~45 dager from transplant). Continue harvesting until first frost (Sep 22).

Gresskar 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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