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Major Sponsors:
The Elizabeth Ordway Dunn Foundation
Perennial sea-purslane, Shoreline seapurslane
Sesuvium portulacastrum
Aizoaceae
General Landscape Uses:
Groundcover in open, coastal areas.
Availability:
Native plant nurseries.
Description:
Small prostrate herb.
Dimensions:
About 3-8 inches in height. Spreading and forming large patches much broader than tal.
Growth Rate:
Moderate to fast.
Range:
Southeastern United States west to Texas and south to the Monroe County Keys; West Indies, Mexico, Central America, South America and Old World.
Habitats:
Beach dunes and brackish coastal areas.
Soils:
Wet to moist, periodically inundated brackish or saline soils, with or without organic or humusy top layer.
Nutritional Requirements:
Low; it grows in nutrient poor soils.
Salt Water Tolerance:
High; tolerates flooding by salt 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:
Sepals green on the outside, pink to pinkish-purple on the inside.
Flower Characteristics:
Semi-showy. The petals are absent.
Flowering Season:
All year.
Fruit:
Inconspicuous capsule.
Wildlife and Ecology:
An important sand stabilizer in the pioneer zone of beach dunes and can tolerate occasional flooding by sea water.
Horticultural Notes:
Can be grown from seed and cuttings.
Comments:
The succulent leaves are edible (although very salty) and have been used as a source of vitamin C.
George D. Gann in habitat, New Providence, Bahamas, 2012
Keith A. Bradley
Keith A. Bradley in habitat, Abaco Island, Bahamas, 2005
Roger L. Hammer
Susan Trammell