When should I plant Auringonkukka in Zone 5b?

Start Auringonkukka seeds indoors around Apr 7. Transplant outdoors after May 5. Expect first harvest around Jul 9.

What is the last frost date for Zone 5b?

The average last spring frost date for Zone 5b is Apr 28. The first fall frost averages Oct 8, giving a 163-day growing season.

Can I grow Auringonkukka in Zone 5b?

Yes. Auringonkukka needs 90 days to harvest. Zone 5b has a 163-day growing season, which is sufficient. You can plant up to 5 successions.

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🌻 Growing Auringonkukka in Zone 5b

Zone 5b has cold winters and a moderate growing season. Timing is key for Auringonkukka in this zone. Viimeinen halla: Apr 28. Ensimmäinen halla: Oct 8.

Planting Calendar

Indoor

Outdoor

Harvest

Apr 7Oct 8

Season: Apr 28 – Oct 8 (163 päivää) · Succession: plant every 2 weeks (up to 5x)

Vyöhyke5b

Viimeinen hallaApr 28

Ensimmäinen hallaOct 8

Kausi163 päivää

Sato90 päivää

AurinkoTäysi Aurinko

When to Plant Auringonkukka in Zone 5b

Start Seeds Indoors: Apr 7

Start Auringonkukka seeds indoors around Apr 7 (3 viikkoa ennen viimeistä hallaa). Optimal germination temperature: 75F. Germinates in 7-14 days.

Transplant Outdoors: May 5

Transplant Auringonkukka seedlings outdoors after May 5. Wait until soil temperature reaches 55F. Space plants at 1/m² (30cm välein). Harden off plants for a week before moving outside.

Harvest: Jul 9

First harvest approximately Jul 9 (~65 päivää from transplant). Continue harvesting until first frost (Oct 8).

Kumppaniviljely

✅ Kurkut✅ Kurpitsa ✅ Maissi✅ Pavut

❌ Perunat

Auringonkukka 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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Track Auringonkukka from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.

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