When should I plant Kesäkurpitsa in Zone 3a?

Start Kesäkurpitsa seeds indoors around Apr 24. Transplant outdoors after Jun 5. Expect first harvest around Jul 10.

What is the last frost date for Zone 3a?

The average last spring frost date for Zone 3a is May 22. The first fall frost averages Sep 12, giving a 113-day growing season.

Can I grow Kesäkurpitsa in Zone 3a?

Yes. Kesäkurpitsa needs 50 days to harvest. Zone 3a has a 113-day growing season, which is sufficient. You can plant up to 3 successions.

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🥒 Growing Kesäkurpitsa in Zone 3a

Zone 3a has harsh winters and a short growing season. Start Kesäkurpitsa early indoors to maximize your harvest window. Viimeinen halla: May 22. Ensimmäinen halla: Sep 12.

Planting Calendar

Indoor

Outdoor

Harvest

Apr 24Sep 12

Season: May 22 – Sep 12 (113 päivää) · Succession: plant every 3 weeks (up to 3x)

Vyöhyke3a

Viimeinen hallaMay 22

Ensimmäinen hallaSep 12

Kausi113 päivää

Sato50 päivää

AurinkoTäysi Aurinko

When to Plant Kesäkurpitsa in Zone 3a

Start Seeds Indoors: Apr 24

Start Kesäkurpitsa seeds indoors around Apr 24 (4 viikkoa ennen viimeistä hallaa). Optimal germination temperature: 85F. Germinates in 4-10 days.

Transplant Outdoors: Jun 5

Transplant Kesäkurpitsa seedlings outdoors after Jun 5. Wait until soil temperature reaches 65F. Space plants at 1/m² (30cm välein). Harden off plants for a week before moving outside.

Harvest: Jul 10

First harvest approximately Jul 10 (~35 päivää from transplant). Continue harvesting until first frost (Sep 12).

Fall Planting: Jul 4

For a fall harvest, plant Kesäkurpitsa around Jul 4 (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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