When should I plant 洋葱 in Zone 1a?

Start 洋葱 seeds indoors around 3月16日. Transplant outdoors after 4月27日. Expect first harvest around 7月16日.

What is the last frost date for Zone 1a?

The average last spring frost date for Zone 1a is 5月25日. The first fall frost averages 8月28日, giving a 95-day growing season.

Can I grow 洋葱 in Zone 1a?

Zone 1a has a 95-day growing season, which may be too short for 洋葱 (110 days needed). Consider short-season varieties or season extension techniques.

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🧅 种植洋葱区域 1a

Zone 1a has harsh winters and a short growing season. Start 洋葱 early indoors to maximize your harvest window. 末次霜冻: 5月25日. 初次霜冻: 8月28日.

Season Too Short

洋葱 needs 110 days to harvest, but Zone 1a has only a 95-day growing season. Consider short-season varieties or season extension techniques.

区域1a

末次霜冻5月25日

初次霜冻8月28日

生长季95 天

收获110 天

日照全日照

When to Plant 洋葱 in Zone 1a

Start Seeds Indoors: 3月16日

Start 洋葱 seeds indoors around 3月16日 (10 周(最后霜冻前)). Optimal germination temperature: 70F. Germinates in 7-14 days.

Transplant Outdoors: 4月27日

Transplant 洋葱 seedlings outdoors after 4月27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: 7月16日

First harvest approximately 7月16日 (~80 天 from transplant). Continue harvesting until first frost (8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 1a