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 www.USBG.gov 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 www.USBG.gov/AtHome.

Koki'o ke'oke'o or Hawaiian white hibiscus

Hibiscus waimeae
Plant Botanical Name: 
Hibiscus waimeae
USBG Plant Location: 
Conservatory
Conservatory Room Location: 
Hawaii
Plant Threat Level: 
Endangered

Hibiscus waimeae is endemic to Kauai, occurring in two distinct and isolated populations on opposite sides of the island. Though separated by less than 30 miles, these have evolved to have unique flower and leaf characteristics that distinguish them from one another. Because Hibiscus species hybridize readily, the unique characteristics of Hibiscus waimeae are threatened by cross-pollination with non-native Hibiscus varieties that have been introduced to Kauai for ornamental use. By carefully hand-pollinating and isolating flowers of Hibiscus waimeae, conservationists are able to collect, grow and store seeds that have not been cross-pollinated.