Opening/ Closure Status

All outdoor gardens are currently open. The Conservatory and public restrooms remain closed, due to the closure of the U.S. Capitol campus buildings. Please monitor for updates on operating status. USBG resources can be accessed online, including educational materials, virtual tours, and online programs by visiting

Regional Garden

Acanthus spinosus is native to the Mediterranean and can tolerate most garden conditions other than poorly drained soils. It can withstand full sun, but may preform best with late afternoon shade. It has showy vertical reddish-purple flower spikes that are held above the foliage, which is an attractive glossy green. Although slow to establish, it can spread by creeping roots if not kept in check.

Oenothera fruticosa or sundrops is a day flowering member of the evening primrose family and makes a wonderful addition to the front of a border or a rock garden. It tolerates poor soil and blooms profusely from May through June with few insect or disease issues.

A cultivar of a native, this boxelder stays under 30 feet with an outstanding display of chartreuse yellow leaves. It can take wet feet and once established can also withstand some drought. Boxelder is relatively fast growing, therefore has weaker branching and can suffer damage from ice or heavy snow.

This cultivar of the native boxelder stays under 30 feet, is not selfseeder, and has an outstanding display of chartreuse yellow leaves. It can take wet feet and once established can also withstand some drought. Boxelder is relatively fast growing therefore weaker branching tree, so this specieman can suffer damage by ice or heavy snow.

Ilex x attenuata, is a natural hybrid of two North American species of holly (Ilex opaca and Ilex cassine). Longwood Gold is from seed collected at the Morris Arboretum. One of the plants grown from the seed turned out to have yellow fruit, and Longwood selected this plant for its fruit color and superior cold tolerance.

Gordonia is an attractive native tree for the home garden. It has fragrant, white 'camellia-like' flowers in the summer, and although mostly evergreen, some leaves turn red and drop during the autumn. Found continuously along the Atlantic and Gulf coastal plains from North Carolina to the Florida panhandle, with segmented populations in the coastal counties of Alabama and southern Mississippi.

This is a shrub native to Eastern North America) and wonderful garden plant. It has nice flowers, abundant red fruit and outstanding bright red fall foliage. Once estabilished, it will sucker into an attractive clump. Although not widely used, the botanical name has been changed to Photinia pyrifolia 'Brilliantissima.'

Gentiana autumnalis, also known as the pine barren gentian, is native to the Atlantic coast from New Jersey southward to Georgia. Historically, fires caused by lightning were common in these wet pine barrens and coastal bogs where this rare species grows. These fires maintained the unique plant community by preventing the succession of the ecosystem to hardwood forest, in addition to recycling organic matter to the sandy, acidic and nutrient-poor soil.