Growing Rhubarb in Zone 3b
Zone 3b has harsh winters and a short growing season. Start Rhubarb early indoors to maximize your harvest window. น้ำค้างแข็งครั้งสุดท้าย: May 15. น้ำค้างแข็งครั้งแรก: Sep 22.
Planting Calendar
Season: May 15 – Sep 22 (130 วัน)
When to Plant Rhubarb in Zone 3b
Start Seeds Indoors: Mar 6
Start Rhubarb seeds indoors around Mar 6 (10 สัปดาห์ก่อนน้ำค้างแข็งครั้งสุดท้าย). Optimal germination temperature: 65F. Germinates in 7-21 days.
Transplant Outdoors: Apr 17
Transplant Rhubarb seedlings outdoors after Apr 17. Wait until soil temperature reaches 40F. Space plants at 1/ตร.ม. (30cm ห่างกัน). Harden off plants for a week before moving outside.
Harvest: Apr 17
First harvest approximately Apr 17 (~365 วัน from transplant). Continue harvesting until first frost (Sep 22). 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 13bPlan Your Garden Rhubarb
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