A staple in Philadelphia since 1829, the Pennsylvania Horticultural Society (PHS) Philadelphia Flower Show is the oldest and largest indoor horticultural event in the world, typically drawing tens of thousands of people each year.
Since its inception, the Flower Show has stood at the precipice of creativity and innovation (the poinsettia made its North American debut at the show!), attracting top florists, landscapers, designers and horticulturists from across the globe.
The 2026 theme — Rooted: Origins of American Gardening — takes flower enthusiasts on a journey through the history of American gardening, set to coincide with the year-long semiquincentennial celebration across the region and country in 2026.
While the 2025 theme (Gardens of Tomorrow) looked at the future and 2024 celebrated the present (United by Flowers), the 2026 show looks back at horticultural legacies and cultural practices that shaped our current gardening landscapes.
Beyond its large-scale landscapes, the ticketed event hosts a major juried competition in horticulture and floral arranging, as well as tons of gardening talks and demonstrations, hands-on activities for all ages, special events, a sprawling market and so much more.
This year, the PHS Philadelphia Flower Show runs from February 28 through March 8, 2026. Tickets can be purchased here.