When should I plant Rhubarb in Zone 1b?

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

What is the last frost date for Zone 1b?

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

Can I grow Rhubarb in Zone 1b?

Yes. Rhubarb needs 90 days to harvest. Zone 1b has a 95-day growing season, which is sufficient.

种植 Rhubarb 区域 1b

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

Planting Calendar

Indoor

Outdoor

Harvest

3月16日8月28日

Season: 5月25日 – 8月28日 (95 天)

区域1b

末次霜冻5月25日

初次霜冻8月28日

生长季95 天

收获90 天

日照全日照

When to Plant Rhubarb in Zone 1b

Start Seeds Indoors: 3月16日

Start Rhubarb seeds indoors around 3月16日 (10 周(最后霜冻前)). Optimal germination temperature: 65F. Germinates in 7-21 days.

Transplant Outdoors: 4月27日

Transplant Rhubarb seedlings outdoors after 4月27日. Wait until soil temperature reaches 40F. Space plants at 1/m² (30cm 间距). Harden off plants for a week before moving outside.

Harvest: 4月27日

First harvest approximately 4月27日 (~365 天 from transplant). Continue harvesting until first frost (8月28日). Rhubarb can overwinter in mild climates for continued harvest.

Rhubarb 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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