When should I plant 洋葱 in Zone 8a?

Start 洋葱 seeds indoors around 1月25日. Transplant outdoors after 3月8日. Expect first harvest around 5月27日.

What is the last frost date for Zone 8a?

The average last spring frost date for Zone 8a is 4月5日. The first fall frost averages 10月28日, giving a 206-day growing season.

Can I grow 洋葱 in Zone 8a?

Yes. 洋葱 needs 110 days to harvest. Zone 8a has a 206-day growing season, which is sufficient.

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🧅 种植洋葱区域 8a

Zone 8a has warm winters and an extended growing season -- excellent for heat-loving crops like 洋葱. 末次霜冻: 4月5日. 初次霜冻: 10月28日.

Planting Calendar

Indoor

Outdoor

Harvest

1月25日10月28日

Season: 4月5日 – 10月28日 (206 天)

区域8a

末次霜冻4月5日

初次霜冻10月28日

生长季206 天

收获110 天

日照全日照

When to Plant 洋葱 in Zone 8a

Start Seeds Indoors: 1月25日

Start 洋葱 seeds indoors around 1月25日 (10 周(最后霜冻前)). Optimal germination temperature: 70F. Germinates in 7-14 days.

Transplant Outdoors: 3月8日

Transplant 洋葱 seedlings outdoors after 3月8日. Wait until soil temperature reaches 45F. Space plants at 9/m² (10cm 间距). Harden off plants for a week before moving outside.

Harvest: 5月27日

First harvest approximately 5月27日 (~80 天 from transplant). Continue harvesting until first frost (10月28日).

伴生植物

✅ 草莓✅ 卷心菜✅ 甜菜✅ 生菜✅ 胡萝卜✅ 番茄

❌ 豆类❌ 豌豆

洋葱其他区域

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

规划花园洋葱

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

Start Free 洋葱 Growing Guide

🧅 种植 洋葱 区域 8a