When should I plant Zonnebloem in Zone 9b?

Start Zonnebloem 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 Zonnebloem in Zone 9b?

Yes. Zonnebloem 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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🌻 Kweken van Zonnebloem in Zone 9b

Zone 9b has warm winters and an extended growing season -- excellent for heat-loving crops like Zonnebloem. Laatste vorst: Mar 10. Eerste vorst: Nov 15.

Planting Calendar

Indoor

Outdoor

Harvest

Feb 17Nov 15

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

Zone9b

Laatste vorstMar 10

Eerste vorstNov 15

Seizoen250 dagen

Oogst90 dagen

ZonVolle Zon

When to Plant Zonnebloem in Zone 9b

Start Seeds Indoors: Feb 17

Start Zonnebloem seeds indoors around Feb 17 (3 weken voor de laatste vorst). Optimal germination temperature: 75F. Germinates in 7-14 days.

Transplant Outdoors: Mar 17

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

Harvest: May 21

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

Begeleidende Beplanting

✅ Komkommers✅ Pompoen ✅ Maïs✅ Bonen

❌ Aardappels

Zonnebloem in Andere 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

Plan Je Tuin voor Zonnebloem

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

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