When to Plant Rhubarb in Bowbells, North Dakota (58721)
Location
Bowbells, North Dakota
ZIP Code
58721
USDA Zone
4a
Last Frost
Friday, May 15, 2026
📅 Planting Calendar
Start Seeds Indoors Friday, March 20, 2026
Transplant Outdoors Friday, May 29, 2026
Pro Tip: Start Rhubarb seeds indoors 8 weeks before your last frost date for best results.
🌿 Plant Details
Scientific Name Rheum rhabarbarum
Days to Maturity 7 days
☀️ Growing Requirements
☀️
Sun
Full Sun
💧
Water
Regular
Seeds typically germinate in 8-21 days
Other Plants for Bowbells
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Growing Rhubarb in Zone 4a
Rhubarb (Rheum rhabarbarum) is a popular garden vegetable. In Bowbells, North Dakota, which is in USDA Hardiness Zone 4a, you should start seeds indoors around Friday, March 20, 2026.
Your average last frost date is Friday, May 15, 2026. Plan to transplant your Rhubarb seedlings outdoors around Friday, May 29, 2026, about 2 weeks after your last frost date.