Garden Closed

The United States Botanic Garden (USBG) is temporarily closed to the public to reduce the risk of transmitting COVID-19 coronavirus.

Whenever possible, the USBG will reschedule public programs and events originally scheduled during the closure period. Please monitor the USBG website at www.USBG.gov for updates to operating status. Many resources can still be accessed online, including educational worksheets and manuals, fact sheets and more, and some of our programs will also be made available online.

Silversword

Argyroxiphium sandwicense
Plant Botanical Name: 
Argyroxiphium sandwicense
USBG Plant Location: 
Conservatory
Conservatory Room Location: 
Hawaii
Plant Threat Level: 
Threatened

Argyroxiphium sandwicense is endemic to the islands of Maui and Hawaii. Subspecies macrocephalum occurs on Maui, and subspecies sandwicense on the island of Hawaii. There are a total of eight subpopulations, many of which are limited to very few remaining naturally occurring plants.