When to Plant Thyme in Pennsylvania
State
Pennsylvania
Cities Covered
1787
USDA Zones
5a, 5b, 6a, 6b, 7a, 7b, 8a
Plant Type
Indoor Start
📅 Planting Calendar for Pennsylvania
Based on Philadelphia (Zone 7b). Dates may vary by city.
Note: Pennsylvania spans multiple zones (5a, 5b, 6a, 6b, 7a, 7b, 8a). Select your city below for more precise dates.
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Growing Thyme in Pennsylvania
Thyme (Thymus vulgaris) is a popular garden vegetable in Pennsylvania. The state spans USDA Hardiness Zones 5a, 5b, 6a, 6b, 7a, 7b, 8a, so planting dates can vary significantly depending on your location.
For most of Pennsylvania, you should start Thyme seeds indoors around Sunday, February 8, 2026, then transplant outdoors around Sunday, April 19, 2026.
For the most accurate planting dates, enter your ZIP code on our homepage or select your city from the list above.