When should I plant 洋葱 in Zone 11a?

Start 洋葱 seeds indoors around 11月19日. Transplant outdoors after 12月31日. Expect first harvest around 3月21日.

What is the last frost date for Zone 11a?

The average last spring frost date for Zone 11a is 1月28日. The first fall frost averages 12月22日, giving a 328-day growing season.

Can I grow 洋葱 in Zone 11a?

Yes. 洋葱 needs 110 days to harvest. Zone 11a has a 328-day growing season, which is sufficient.

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🧅 种植洋葱区域 11a

Zone 11a has a year-round growing season. 洋葱 can be planted almost any time with proper planning. 末次霜冻: 1月28日. 初次霜冻: 12月22日.

Planting Calendar

Indoor

Outdoor

Harvest

11月19日12月22日

Season: 1月28日 – 12月22日 (328 天)

区域11a

末次霜冻1月28日

初次霜冻12月22日

生长季328 天

收获110 天

日照全日照

When to Plant 洋葱 in Zone 11a

Start Seeds Indoors: 11月19日

Start 洋葱 seeds indoors around 11月19日 (10 周(最后霜冻前)). Optimal germination temperature: 70F. Germinates in 7-14 days.

Transplant Outdoors: 12月31日

Transplant 洋葱 seedlings outdoors after 12月31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: 3月21日

First harvest approximately 3月21日 (~80 天 from transplant). Continue harvesting until first frost (12月22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 11a