25 gardens in Pennsylvania checked against official websites: 14 arboretums, 8 botanical gardens, 3 native plant gardens. Most are listed in or near Philadelphia, Pittsburgh, Villanova. 10 list free general entry and 10 charge admission; the rest are unrecorded or vary.
Admission and hours checked September 28, 2026. Prices may change.
A 224-acre preserve in Chester County with a 55-acre arboretum around a historic estate house. Grounds are open on weekdays; nonmembers may leave a donation.
These are gardens we could check against their own official websites, not every garden in the area. “Free” refers to general garden entry, not parking, tours or special events. We do not show live opening status.
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