Schedule Change

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.

Swamp milkweed

Swamp milkweed (Asclepias incarnata)
Plant Botanical Name: 
Asclepias incarnata
Plant Sub Species or Variety: 
ssp. pulchra
USBG Plant Location: 
National Garden
full sun
Plant Moisture Requirements: 
medium to wet

Swamp milkweed is an excellent choice for moist to wet locations. It serves as a larval host for monarch butterflies.