When should I plant Slunečnice in Zone 9b?

Start Slunečnice seeds indoors around Feb 17. Transplant outdoors after Mar 17. Expect first harvest around May 21.

What is the last frost date for Zone 9b?

The average last spring frost date for Zone 9b is Mar 10. The first fall frost averages Nov 15, giving a 250-day growing season.

Can I grow Slunečnice in Zone 9b?

Yes. Slunečnice needs 90 days to harvest. Zone 9b has a 250-day growing season, which is sufficient. You can plant up to 11 successions.

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🌻 Growing Slunečnice in Zone 9b

Zone 9b has warm winters and an extended growing season -- excellent for heat-loving crops like Slunečnice. Poslední mráz: Mar 10. První mráz: Nov 15.

Planting Calendar

Indoor

Outdoor

Harvest

Feb 17Nov 15

Season: Mar 10 – Nov 15 (250 dní) · Succession: plant every 2 weeks (up to 11x)

Zóna9b

Poslední mrázMar 10

První mrázNov 15

Sezóna250 dní

Sklizeň90 dní

SluncePlné Slunce

When to Plant Slunečnice in Zone 9b

Start Seeds Indoors: Feb 17

Start Slunečnice seeds indoors around Feb 17 (3 týdnů před posledním mrazem). Optimal germination temperature: 75F. Germinates in 7-14 days.

Transplant Outdoors: Mar 17

Transplant Slunečnice seedlings outdoors after Mar 17. Wait until soil temperature reaches 55F. Space plants at 1/m² (30cm od sebe). Harden off plants for a week before moving outside.

Harvest: May 21

First harvest approximately May 21 (~65 dní from transplant). Continue harvesting until first frost (Nov 15).

Smíšená Výsadba

✅ Okurky✅ Dýně ✅ Kukuřice✅ Fazole

❌ Brambory

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

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