Growing Rhubarb in Zone 5b
Zone 5b has cold winters and a moderate growing season. Timing is key for Rhubarb in this zone. น้ำค้างแข็งครั้งสุดท้าย: Apr 28. น้ำค้างแข็งครั้งแรก: Oct 8.
Planting Calendar
Season: Apr 28 – Oct 8 (163 วัน)
When to Plant Rhubarb in Zone 5b
Start Seeds Indoors: Feb 17
Start Rhubarb seeds indoors around Feb 17 (10 สัปดาห์ก่อนน้ำค้างแข็งครั้งสุดท้าย). Optimal germination temperature: 65F. Germinates in 7-21 days.
Transplant Outdoors: Mar 31
Transplant Rhubarb seedlings outdoors after Mar 31. Wait until soil temperature reaches 40F. Space plants at 1/ตร.ม. (30cm ห่างกัน). Harden off plants for a week before moving outside.
Harvest: Mar 31
First harvest approximately Mar 31 (~365 วัน from transplant). Continue harvesting until first frost (Oct 8). 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
Track Rhubarb from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.
Start Free Rhubarb Growing Guide