On Friday, September 19, the U.S. Botanic Garden's outdoor National Garden will close early at 5 p.m. It will reopen for regularly scheduled hours on Saturday, September 20 at 10 a.m.
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.