When to Plant Rhubarb in Kingston Mines, Illinois (61539)
Location
Kingston Mines, Illinois
ZIP Code
61539
USDA Zone
6a
Last Frost
Monday, April 20, 2026
📅 Planting Calendar
Start Seeds Indoors Monday, February 23, 2026
Transplant Outdoors Monday, May 4, 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 Kingston Mines
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Growing Rhubarb in Zone 6a
Rhubarb (Rheum rhabarbarum) is a popular garden vegetable. In Kingston Mines, Illinois, which is in USDA Hardiness Zone 6a, you should start seeds indoors around Monday, February 23, 2026.
Your average last frost date is Monday, April 20, 2026. Plan to transplant your Rhubarb seedlings outdoors around Monday, May 4, 2026, about 2 weeks after your last frost date.