When to Plant Rhubarb in Upper Darby, Pennsylvania (19082)
Location
Upper Darby, Pennsylvania
ZIP Code
19082
USDA Zone
7b
Last Frost
Sunday, April 5, 2026
📅 Planting Calendar
Start Seeds Indoors Sunday, February 8, 2026
Transplant Outdoors Sunday, April 19, 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 Upper Darby
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Growing Rhubarb in Zone 7b
Rhubarb (Rheum rhabarbarum) is a popular garden vegetable. In Upper Darby, Pennsylvania, which is in USDA Hardiness Zone 7b, you should start seeds indoors around Sunday, February 8, 2026.
Your average last frost date is Sunday, April 5, 2026. Plan to transplant your Rhubarb seedlings outdoors around Sunday, April 19, 2026, about 2 weeks after your last frost date.