When should I plant 向日葵 in Zone 5a?

Start 向日葵 seeds indoors around 4月7日. Transplant outdoors after 5月5日. Expect first harvest around 7月9日.

What is the last frost date for Zone 5a?

The average last spring frost date for Zone 5a is 4月28日. The first fall frost averages 10月8日, giving a 163-day growing season.

Can I grow 向日葵 in Zone 5a?

Yes. 向日葵 needs 90 days to harvest. Zone 5a has a 163-day growing season, which is sufficient. You can plant up to 5 successions.

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🌻 种植向日葵区域 5a

Zone 5a has cold winters and a moderate growing season. Timing is key for 向日葵 in this zone. 末次霜冻: 4月28日. 初次霜冻: 10月8日.

Planting Calendar

Indoor

Outdoor

Harvest

4月7日10月8日

Season: 4月28日 – 10月8日 (163 天) · Succession: plant every 2 weeks (up to 5x)

区域5a

末次霜冻4月28日

初次霜冻10月8日

生长季163 天

收获90 天

日照全日照

When to Plant 向日葵 in Zone 5a

Start Seeds Indoors: 4月7日

Start 向日葵 seeds indoors around 4月7日 (3 周(最后霜冻前)). Optimal germination temperature: 75F. Germinates in 7-14 days.

Transplant Outdoors: 5月5日

Transplant 向日葵 seedlings outdoors after 5月5日. Wait until soil temperature reaches 55F. Space plants at 1/m² (30cm 间距). Harden off plants for a week before moving outside.

Harvest: 7月9日

First harvest approximately 7月9日 (~65 天 from transplant). Continue harvesting until first frost (10月8日).

伴生植物

✅ 黄瓜✅ 南瓜 ✅ 玉米✅ 豆类

❌ 土豆

向日葵其他区域

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

规划花园向日葵

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

Start Free 向日葵 Growing Guide

🌻 种植 向日葵 区域 5a