When should I plant Slnečnica in Zone 9a?

Start Slnečnica seeds indoors around Feb 27. Transplant outdoors after Mar 27. Expect first harvest around May 31.

What is the last frost date for Zone 9a?

The average last spring frost date for Zone 9a is Mar 20. The first fall frost averages Nov 12, giving a 237-day growing season.

Can I grow Slnečnica in Zone 9a?

Yes. Slnečnica needs 90 days to harvest. Zone 9a has a 237-day growing season, which is sufficient. You can plant up to 10 successions.

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🌻 Growing Slnečnica in Zone 9a

Zone 9a has warm winters and an extended growing season -- excellent for heat-loving crops like Slnečnica. Posledný mráz: Mar 20. Prvý mráz: Nov 12.

Planting Calendar

Indoor

Outdoor

Harvest

Feb 27Nov 12

Season: Mar 20 – Nov 12 (237 dní) · Succession: plant every 2 weeks (up to 10x)

Zóna9a

Posledný mrázMar 20

Prvý mrázNov 12

Sezóna237 dní

Úroda90 dní

SlnkoPlné Slnko

When to Plant Slnečnica in Zone 9a

Start Seeds Indoors: Feb 27

Start Slnečnica seeds indoors around Feb 27 (3 týždňov pred posledným mrazom). Optimal germination temperature: 75F. Germinates in 7-14 days.

Transplant Outdoors: Mar 27

Transplant Slnečnica seedlings outdoors after Mar 27. Wait until soil temperature reaches 55F. Space plants at 1/m² (30cm rozostup). Harden off plants for a week before moving outside.

Harvest: May 31

First harvest approximately May 31 (~65 dní from transplant). Continue harvesting until first frost (Nov 12).

Sprievodné Sadenie

✅ Uhorky✅ Tekvica ✅ Kukurica✅ Fazuľa

❌ Zemiaky

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

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