When should I plant Hướng dương in Zone 9a?

Start Hướng dương seeds indoors around 27 Th2. Transplant outdoors after 27 Th3. Expect first harvest around 31 Th5.

What is the last frost date for Zone 9a?

The average last spring frost date for Zone 9a is 20 Th3. The first fall frost averages 12 Th11, giving a 237-day growing season.

Can I grow Hướng dương in Zone 9a?

Yes. Hướng dương 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 Hướng dương in Zone 9a

Zone 9a has warm winters and an extended growing season -- excellent for heat-loving crops like Hướng dương. Sương giá cuối: 20 Th3. Sương giá đầu: 12 Th11.

Planting Calendar

Indoor

Outdoor

Harvest

27 Th212 Th11

Season: 20 Th3 – 12 Th11 (237 ngày) · Succession: plant every 2 weeks (up to 10x)

Vùng9a

Sương giá cuối20 Th3

Sương giá đầu12 Th11

Mùa vụ237 ngày

Thu hoạch90 ngày

Ánh sángNắng hoàn toàn

When to Plant Hướng dương in Zone 9a

Start Seeds Indoors: 27 Th2

Start Hướng dương seeds indoors around 27 Th2 (3 tuần trước sương giá cuối). Optimal germination temperature: 75F. Germinates in 7-14 days.

Transplant Outdoors: 27 Th3

Transplant Hướng dương seedlings outdoors after 27 Th3. Wait until soil temperature reaches 55F. Space plants at 1/m² (30cm khoảng cách). Harden off plants for a week before moving outside.

Harvest: 31 Th5

First harvest approximately 31 Th5 (~65 ngày from transplant). Continue harvesting until first frost (12 Th11).

Cây trồng đồng hành

✅ Dưa chuột✅ Bí ✅ Ngô✅ Đậu

❌ Khoai tây

Hướng dương 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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