Beach-peanut, Burrowing four-o’clock
Okenia hypogaea
Nyctaginaceae


Landscape Uses:

Primarily recommended for natural landscapes and habitat restorations.

Ecological Restoration Notes:

Ephemeral in open areas of beach dune and coastal strand along the east coast.
Availability:
Grown by one or two native plant nurseries in South Florida.
Description:
Small creeping annual herbaceous wildflower.
Height:
About 2-6 inches in height. Spreading and forming rather large, open patches.
Growth Rate:
Fast.
Range:
Miami-Dade County north along the east coast to St. Lucie County, but perhaps not extant north of Palm Beach County; southern Mexico.
Habitats:
Beach dunes and open disturbed sites along the coast.
Soils:
Moist, well-drained sandy soils, without humus.
Nutritional Requirements:
Low; it grows in nutrient poor soils.
Salt Water Tolerance:
Low; does not tolerate long-term flooding by salt or brackish water.
Salt Wind Tolerance:
Pioneer; grows in unconsolidated substrate in direct salt wind and spray.
Drought Tolerance:
High; does not require any supplemental water once established.
Light Requirements:
Full sun.
Flower Color:
Purple.
Flower Characteristics:
Showy. Dimorphic; showy flowers are purple and infertile.
Flowering Season:
Spring-fall; peak in summer.
Fruit:
Brown peanut-like fruit form and mature underground. Fall.
Wildlife and Ecology:
Horticultural Notes:
Can be grown from seed.
Comments:
A very ephemeral annual that prefers newly disturbed sand. It is listed as endangered by the state of Florida. See also the Florida Wildflower Foundation's Flower Friday page and a 2022 post on the Treasure Coast Natives blog about the interesting pollination and reproduction of Beach-peanut.


Egdomilia S. Gann, 20 Nov 2015
In habitat, Delray Beach Municipal Beach, Florida
Roger L. Hammer
Keith A. Bradley
Keith A. Bradley
Keith A. Bradley