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 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. Find online resources at

Spiny bear's britches

Plant Botanical Name: 
Acanthus spinosus
USBG Plant Location: 
National Garden
Full sun to part shade
Plant Soil Type: 
Poor to average, well-drained garden soil
Plant Moisture Requirements: 

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.

National Garden Room Location: