This species does not appear on any state or national invasive species lists. The blooms open late in the afternoon or evening, hence the common name four Oclock. This map identifies those states that list this species on their invasive species list or law. Four Oclock flowers grow and bloom abundantly in the summer garden. or so, and then remain open until the next morning. The flowers open in the late afternoon, typically around 4 p.m. They get their common name because of the way they bloom. These tuberous-rooted plants produce slightly pointed oval leaves on branching stems. Reports made by experts and records obtained from USDA Plants Database. Four o'clock plants ( Mirabilis jalapa) are bushy blooming perennials. This map is incomplete and is based only on current site and county level John Cardina, The Ohio State University, Ĭatherine Herms, The Ohio State University, īruce Ackley, The Ohio State University, Ohio State Weed Lab, The Ohio State University, Theodore Webster, USDA Agricultural Research Service, states except Alaska, Hawaii, Georgia, Florida, South Carolina, Oregon, and Arizona. Ecological Threat Mirabilis nyctaginea prefers disturbed areas like pastures, roadsides, and abandoned fields. Fruit Seeds are greyish brown to reddish brown in color, narrowly obovate, round to club-shaped, smooth, 0.4 in. This tuberous-rooted plant produces opposite, slightly pointed oval leaves on multi-branching stems. They bloom in early summer and usually only open in the afternoon and at night, closing in the morning. Four oclocks (Mirabilis jalapa) are bushy flowering perennial plants, a long-standing garden favorite often grown as an annual outside its hardiness range (zones 9 to 11). (1.3 cm) across, and are found in clusters of 3-5. Flowers Flowers are magenta, trumpet shaped, 0.5 in.
The upper leaves may be smaller and lanceolate. Foliage Leaves are dark green, opposite, cordate, hairless, 4 in.
(0.61-1.2 m) tall, branching occasionally. Synonym(s): heartleaf four o'clock, heart-leaf four-o'clock, heart-leaved four o'clock, heartleaf four-o'clock, prairie four o clock, wild four-o'clockĪppearance Mirabilis nyctaginea is a perennial plant that can grow to be 2-4 ft. Taxonomic Rank: Magnoliopsida: Caryophyllales: Nyctaginaceae Jump to: Images | Distribution Maps | Sources four-oclock, also called marvel-of-Peru, or beauty-of-the-night, (Mirabilis jalapa) ornamental perennial plant, of the family Nyctaginaceae, native to.