Beyond the 10 acres of gardens, and plant-centric competitions and activities, these events are several ways to up the “fun factor” of their Flower Show experience. The PHS Philadelphia Flower Show is the nation’s largest and longest-running horticultural event and features stunning displays by the world’s premier floral and landscape designers. Started in 1829, the Show introduces diverse plant varieties and sustainable garden and design concepts. In addition to the major garden displays, the Flower Show hosts world-renowned competitions in horticulture and artistic floral arranging, gardening presentations and demonstrations, special events, and the citywide Bloom Philly pre-Show celebration.