When should I plant Leek in Zone 4a?

Start Leek seeds indoors around 2月24日. Transplant outdoors after 4月21日. Expect first harvest around 7月20日.

What is the last frost date for Zone 4a?

The average last spring frost date for Zone 4a is 5月5日. The first fall frost averages 10月1日, giving a 149-day growing season.

Can I grow Leek in Zone 4a?

Yes. Leek needs 120 days to harvest. Zone 4a has a 149-day growing season, which is sufficient.

种植 Leek 区域 4a

Zone 4a has cold winters and a moderate growing season. Timing is key for Leek in this zone. 末次霜冻: 5月5日. 初次霜冻: 10月1日.

Planting Calendar

Indoor

Outdoor

Harvest

2月24日10月1日

Season: 5月5日 – 10月1日 (149 天)

区域4a

末次霜冻5月5日

初次霜冻10月1日

生长季149 天

收获120 天

日照全日照

When to Plant Leek in Zone 4a

Start Seeds Indoors: 2月24日

Start Leek seeds indoors around 2月24日 (10 周(最后霜冻前)). Optimal germination temperature: 70F. Germinates in 7-14 days.

Transplant Outdoors: 4月21日

Transplant Leek seedlings outdoors after 4月21日. Wait until soil temperature reaches 45F. Space plants at 4/m² (15cm 间距). Harden off plants for a week before moving outside.

Harvest: 7月20日

First harvest approximately 7月20日 (~90 天 from transplant). Continue harvesting until first frost (10月1日). Leek can overwinter in mild climates for continued harvest.

伴生植物

✅ 胡萝卜✅ 洋葱✅ 芹菜

❌ 豆类❌ 豌豆

Leek 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

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

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