- Mirabilis nyctaginea is a perennial plant that can grow to be 2-4 ft. (0.61-1.2 m) tall, branching occasionally.
- Leaves are dark green, opposite, cordate, hairless, 4 in. (10.2 cm) long and 3 in. (7.6 cm) across. The upper leaves may be smaller and lanceolate.
- Flowers are magenta, trumpet shaped, 0.5 in. (1.3 cm) across, and are found in clusters of 3-5. They bloom in early summer and usually only open in the afternoon and at night, closing in the morning.
- Seeds are greyish brown to reddish brown in color, narrowly obovate, round to club-shaped, smooth, 0.4 in. (1 cm) in length, and have 5 ribs.
- Ecological Threat
- Mirabilis nyctaginea prefers disturbed areas like pastures, roadsides, and abandoned fields. It is thought to be native to all U.S. states except Alaska, Hawaii, Georgia, Florida, South Carolina, Oregon, and Arizona.
Washington State Noxious Weed Control Board 
University of California, Jepson Flora Project 
Flora of North America, www.eFloras.org 
Ohio Perennial & Biennial Weed Guide 
USDA NRCS PLANTS 
USDA ARS GRIN 
Images from Bugwood.org