The Pennsylvania Horticultural Society (PHS) Philadelphia Flower Show is both the nation's largest and the world's longest-running horticultural event, featuring stunning displays by premier floral and landscape designers from around the globe. Started in 1829 by the Pennsylvania Horticultural Society, the Show introduces diverse and sustainable plant varieties and garden and design concepts. In addition to acres of garden displays, the Flower Show hosts esteemed competitions in horticulture and artistic floral arranging, gardening presentations and demonstrations, and special events. 2023 PHS Philadelphia Flower Show - 'The Garden Electric' That spark of joy that comes while giving or receiving flowers--this is the moment captured by The Garden Electric. From the dazzling array of colors, unique shapes and textures, and rich fragrances of gorgeous floral displays and gardens come feelings of excitement and celebration. This year's theme brings the electrifying presence of today's most dynamic designers of floral arrangements, lush gardens, and landscapes to visitors from around the world.