When should I plant Rhubarb in Zone 3a?

Start Rhubarb seeds indoors around Mar 13. Transplant outdoors after Abr 24. Expect first harvest around Abr 24.

What is the last frost date for Zone 3a?

The average last spring frost date for Zone 3a is May 22. The first fall frost averages Set 12, giving a 113-day growing season.

Can I grow Rhubarb in Zone 3a?

Yes. Rhubarb needs 90 days to harvest. Zone 3a has a 113-day growing season, which is sufficient.

Growing Rhubarb in Zone 3a

Zone 3a has harsh winters and a short growing season. Start Rhubarb early indoors to maximize your harvest window. Huling frost: May 22. Unang frost: Set 12.

Planting Calendar

Indoor

Outdoor

Harvest

Mar 13Set 12

Season: May 22 – Set 12 (113 araw)

Zone3a

Huling frostMay 22

Unang frostSet 12

Season113 araw

Ani90 araw

ArawBuong Araw

When to Plant Rhubarb in Zone 3a

Start Seeds Indoors: Mar 13

Start Rhubarb seeds indoors around Mar 13 (10 linggo bago ang huling hamog). Optimal germination temperature: 65F. Germinates in 7-21 days.

Transplant Outdoors: Abr 24

Transplant Rhubarb seedlings outdoors after Abr 24. Wait until soil temperature reaches 40F. Space plants at 1/m² (30cm pagitan). Harden off plants for a week before moving outside.

Harvest: Abr 24

First harvest approximately Abr 24 (~365 araw from transplant). Continue harvesting until first frost (Set 12). Rhubarb can overwinter in mild climates for continued harvest.

Rhubarb in Other Zones

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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