When to Plant Petunia in Upper Darby, Pennsylvania (19082)
Location
Upper Darby, Pennsylvania
ZIP Code
19082
USDA Zone
7b
Last Frost
Sunday, April 5, 2026
📅 Planting Calendar
Pro Tip: Start Petunia seeds indoors 10 weeks before your last frost date, then transplant outdoors around Sunday, April 19, 2026.
🌿 Plant Details
☀️ Growing Requirements
☀️
Sun
Full Sun (6-8 hours)
💧
Water
Moderate (1 inch/week)
↔️
Spacing
12" apart
🌱
Planting Depth
0.13" deep
Seeds typically germinate in 7-14 days
Ready to Plant Petunia in Upper Darby?
Get your seeds now so they're ready by Sunday, January 25, 2026.
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🤝 Good Companions
⚠️ Avoid Planting Near
Other Plants for Upper Darby
Growing Petunia in Zone 7b
Petunia (Petunia × hybrida) is a popular garden vegetable. In Upper Darby, Pennsylvania, which is in USDA Hardiness Zone 7b, you should start seeds indoors around Sunday, January 25, 2026.
Your average last frost date is Sunday, April 5, 2026. Plan to transplant your Petunia seedlings outdoors around Sunday, April 19, 2026, about 2 weeks after your last frost date.