When should I plant آفتابگردان in Zone 4a?

Start آفتابگردان seeds indoors around Apr 14. Transplant outdoors after May 12. Expect first harvest around Jul 16.

What is the last frost date for Zone 4a?

The average last spring frost date for Zone 4a is May 5. The first fall frost averages Oct 1, giving a 149-day growing season.

Can I grow آفتابگردان in Zone 4a?

Yes. آفتابگردان needs 90 days to harvest. Zone 4a has a 149-day growing season, which is sufficient. You can plant up to 4 successions.

🌻

🌻 Growing آفتابگردان in Zone 4a

Zone 4a has cold winters and a moderate growing season. Timing is key for آفتابگردان in this zone. آخرین یخبندان: May 5. اولین یخبندان: Oct 1.

Planting Calendar

Indoor

Outdoor

Harvest

Apr 14Oct 1

Season: May 5 – Oct 1 (149 روز) · Succession: plant every 2 weeks (up to 4x)

منطقه4a

آخرین یخبندانMay 5

اولین یخبندانOct 1

فصل149 روز

برداشت90 روز

آفتابآفتاب کامل

When to Plant آفتابگردان in Zone 4a

Start Seeds Indoors: Apr 14

Start آفتابگردان seeds indoors around Apr 14 (3 هفته قبل از آخرین سرمازدگی). Optimal germination temperature: 75F. Germinates in 7-14 days.

Transplant Outdoors: May 12

Transplant آفتابگردان seedlings outdoors after May 12. Wait until soil temperature reaches 55F. Space plants at 1/متر² (30cm فاصله). Harden off plants for a week before moving outside.

Harvest: Jul 16

First harvest approximately Jul 16 (~65 روز from transplant). Continue harvesting until first frost (Oct 1).

کاشت همراه

✅ خیارها✅ کدو ✅ ذرت✅ لوبیا

❌ سیب‌زمینی‌ها

آفتابگردان 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

Plan Your Garden آفتابگردان

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

Start Free آفتابگردان Growing Guide