Garden Closed

Due to the closure of the U.S. Capitol Campus to the public, the U.S. Botanic Garden continues to have altered operations.  Bartholdi Fountain and Gardens and the Terrace Gardens are open while the Conservatory and gated outdoor gardens are temporarily closed. Please monitor for updates on operating status. Many resources can be accessed online, including educational materials, virtual tours, and online programs. Connect with resources from home at


Wiliwili seeds Erythrina sandwicensis
Plant Botanical Name: 
Erythrina sandwicensis
USBG Plant Location: 
Conservatory Room Location: 
Rare and Endangered Species
Plant Threat Level: 

Erythrina sandwicensis known as Wiliwili in Hawaii. This means "twisted," referring to its seedpods that twist open to reveal bright red seeds. Erythrina sandwicensis naturally grows to about 45 feet tall and equal width, although in cultivation it is generally smaller. It is one of the few deciduous native Hawaiian trees, losing its leaves during the summer to conserve water and putting out new leaves in the fall. The Wiliwili typically blooms after its leaves appear, although flowering can vary from the summer through November. This species is strongly linked to Hawaiian culture through legends and proverbs. One legend refers to the different appearances of this species in the transformation of three sisters into Wiliwili trees. Indigenous Hawaiians used the very light wood for canoe outriggers and fish net floats, and the red seeds in flower leis. Like many endemic Hawaiian plants, the Wiliwili is threatened.