Special Hours

The U.S. Botanic Garden Conservatory will close at 3 p.m. on Tuesday, December 6, due to an official government function. The Conservatory will return to normal hours December 7.

Holywood

Guaiacum santum
Plant Botanical Name: 
Guaiacum santum
Plant Threat Level: 
Endangered

Guaiacum sanctum or Holywood is a less valuable but rarely distinguished from "lignum-vitae" or G. officinale. Native to the Caribbean, Central America and Florida with few remaining populations, the species is all but extinct and extremely rare across its native range.