Texas Tech University

Four O’Clocks

Mirabilis jalapa

(Detailed plant information can be found at the bottom of the page.)
Mirabilis jalapa

Mirabilis jalapa Photo Gallery

Mirabilis jalapa Plant Information

Scientific Name: Mirabilis jalapa
Common Name: four o'clocks
Family: Nyctaginaceae
Suggested Uses: tender perennial often used as an annual

beds & borders, container plantings
Plant Form: upright
Height: 1.5 - 2.5 feet
Spread: 1 - 2 feet
Foliage: erect stems and mid-green heart shaped opposite leaves
Flower: yellow, red, magenta, rose, or white trumpet shaped, 1" fragrant flowers

flowers open during mid to late afternoon then fade the next morning
Bloom Period: Summer - Fall
Sun: light shade
Water: medium water requirement

Soil: prefers rich soil
Heat Tolerance: high heat tolerance
USDA Zone: zones 7 - 11
Native Range: American tropics
Maintenance: poisonous if ingested

propagation by seed; easy to direct seed into garden
Pests & Pathology: susceptible to root rot
Wildlife: attracts hummingbirds
Additional Notes: tolerates pollution and humidity

TTU Plant Resources