When should I plant Kesäkurpitsa in Zone 3b?

Start Kesäkurpitsa seeds indoors around Apr 17. Transplant outdoors after May 29. Expect first harvest around Jul 3.

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 Kesäkurpitsa in Zone 3b?

Yes. Kesäkurpitsa needs 50 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 Kesäkurpitsa in Zone 3b

Zone 3b has harsh winters and a short growing season. Start Kesäkurpitsa early indoors to maximize your harvest window. Viimeinen halla: May 15. Ensimmäinen halla: Sep 22.

Planting Calendar

Indoor

Outdoor

Harvest

Apr 17Sep 22

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

Vyöhyke3b

Viimeinen hallaMay 15

Ensimmäinen hallaSep 22

Kausi130 päivää

Sato50 päivää

AurinkoTäysi Aurinko

When to Plant Kesäkurpitsa in Zone 3b

Start Seeds Indoors: Apr 17

Start Kesäkurpitsa seeds indoors around Apr 17 (4 viikkoa ennen viimeistä hallaa). Optimal germination temperature: 85F. Germinates in 4-10 days.

Transplant Outdoors: May 29

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

Harvest: Jul 3

First harvest approximately Jul 3 (~35 päivää from transplant). Continue harvesting until first frost (Sep 22).

Fall Planting: Jul 14

For a fall harvest, plant Kesäkurpitsa around Jul 14 (10 weeks before first frost).

Kumppaniviljely

✅ Maissi✅ Pavut✅ Krassit✅ Hunajakukka

❌ Perunat

Kesäkurpitsa 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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