Flowering Tree Collection The Friendship Garden and Arbor House Gotelli Dwarf and Slow Growing Conifer Collection Gotelli and Watnong Collections Introduction Garden National Bonsai & Penjing Museum National Grove of State Trees National Herb Garden Historic roses, Knot Garden, and themed gardens Washington Youth Garden Source: Single-genus groupings Azalea Collections Glenn Dale Azalea Hillside, Morrison Garden, and Lee Garden Dogwood Collection Holly Collection Magnolia Collection National Maple Collection National Boxwood Collection Perennial Collections Source: National Grove of State Trees The National Grove of State Trees (often just called the Grove) is a display of trees representing the 50 states and the District of Columbia. Fifty-one plots are arrayed over 30 acres (120,000 m²), each plot home to a grouping of a state's official tree species, or in a few cases, another species indigenous to the state but better suited to growing in the local climate. Bald cypress that might be found in a Louisiana swamp grow just a short walk from pines and birches that grow in New England forests; young redwoods from California grow near cottonwoods that might grow in riverside forests in the otherwise treeless Great Plains States. Although the mid-Atlantic region has mild weather, which allows the USDA to grow most of the designated species, it cannot successfully grow a few of the state trees such as the cabbage palmetto, which is the state tree of both Florida and South Carolina, or the kukui, which is Hawaii's state tree. Substitutes have been made for these species, so the arboretum could have a tree that is important in each of the states. Planting was undertaken in 1989 with the National Association of State Foresters, the American Forest Foundation, the USDA Forest Service, and the National Arboretum. The centerpiece of the collection is the portal adjacent to the M Street parking lot. A wooden entrance arbor is dedicated to the memory of Jeanne Yeutter, wife of former Secretary of Agriculture Clayton Yeutter. Her sponsorship of the project helped the concept of a Grove of State Trees to be realized. The inscription on the arbor reads, "In Celebration of Jeanne Yeutter's Love of Trees". The arbor leads to a large plaza with a flagstone star and a wall adorned with pottery tiles designed and fabricated by Liza Bach, a Tennessee crafter. Each tile is individually cast with the name of each state and a raised image of the foliage of