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Pennsylvania Horticultural Society

The Pennsylvania Horticultural Society is a not-for-profit organization, founded in 1827, whose programs connect people to horticulture, and together we create beautiful, healthy and sustainable communities. PHS’s best known activities include the Philadelphia Flower Show, street tree planting and maintenance, community gardening, public beautification, and the PHS Pop Up Gardens. PHS is supported by individual members and supporters, foundations, partners and government grants. PHS programs bring together people from diverse backgrounds to engage in horticultural projects that advance social equity, environmental sustainability, and urban livability. For information or to support our work, visit PHSonline.org.

  • PHS Philadelphia Flower Show

    The PHS Philadelphia Flower Show is the nation’s premier horticultural event, providing inspirational, informative, and entertaining displays for a quarter-million visitors from around the world each year. The show includes garden and floral exhibits, live competitions, educational displays, presentations, special evening events, and a variety of satellite activities. The Flower Show generates an economic impact of more than $61 million in the Greater Philadelphia region.

  • Community Greening

    PHS engages a diverse community of individuals and groups who use horticulture to strengthen communities and create a legacy of beauty. Through gardening and greening, PHS stabilizes vacant land, restores the tree canopy, creates and supports community gardens, provides freshly grown food for neighbors in need, trains returning citizens for green jobs, and beautifies public gardens and landscapes.

  • Parkway Projects

    PHS uses organic practices to manage Philadelphia’s treasured public spaces, including the landscapes at Logan Square, the Azalea Garden, the grounds of the Philadelphia Museum of Art, and the gardens of the Rodin Museum.

  • PHS McLean Library

    The McLean Library at PHS headquarters, 20th and Arch Streets, has 15,000 books on gardening and plant care, botany, urban greening, and other resources, including a circulation collection of books and videos for PHS members and rare and historic gardening books and seed catalogs from the 16th through 20st centuries.


For Adults

Plan ahead for the 2019 PHS Philadelphia Flower Show, “Flower Power,” and learn about all the benefits of membership, the McLean Library, and educational programs.

2019 PHS Philadelphia Flower Show

PHS McLean Library


For Kids

Learn about family-friendly exhibits and special experiences at the Flower Show.

Flower Show Attractions

For Students, Schools/Teachers

Learn about our Green City Teachers.

Junior Flower Show

Programs and Events 


Volunteer and Support PHS

Your contribution of time and talent will support the work of PHS, and you’ll have a great time, too. Visit our Volunteer page for information. Support PHS and help us garden for the greater good! 

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