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Marcus, Joseph A.
Acanthocereus tetragonus (L.) Humm.
Triangle Cactus, Barbed-wire Cactus, Chaco
Synonym(s): Acanthocereus floridanus, Acanthocereus pentagonus, Cactus tetragonus, Cereus pentagonus
USDA Symbol: acte4
Sprawling, clambering or arching-accumbent stems to several meters (up to 2m growth per year), Ribs are sharply-angled, usually 3 on mature stems, 4-5 on juvenile stems. Spiney. Spines variable, usually about 8 per areaole, 2.5-5cm long. Night-flowering, fully open flower 10-20cm in diameter, inner tepals are pure white, slightly fragrant. Fruits are shiny, red and sweet-tasting.
Triangle cactus has large, fragrant white blooms that open at night during the summer and attract hummingbird moths. This cactus is hardy to about 20 degrees Fahrenheit.
Bloom InformationBloom Color: White
Bloom Time: Jul , Aug , Sep
Bloom Notes: Night-flowering, usually opening near midnight, closing at or about dawn. Flowers are large and slightly fragrant.
, TX Native Distribution:
Coastal areas of South Texas, Florida, West Indies, Mexico, Central America and northern South America. Native Habitat:
Thickets in sandy, coastal areas.
Growing ConditionsWater Use: Low , Medium
Light Requirement: Part Shade
Soil Moisture: Dry , Moist
Drought Tolerance: High
Heat Tolerant: yes
Soil Description: Sandy, moist soils.
Garden curiosity. Use Wildlife: In
Key Largo woodrats eat the stems. Use Food: Fruit
is edible and sweet. Warning:
Painfully spiney plants. May be a garden aggressive. Conspicuous Flowers:
Butterflies Nectar Source:
Seeds , Semi-hardwood Cuttings Description:
May be propagated by seed or by stem
cuttings. Seed Collection:
Seed should be removed from fruit
pulp and thorougly dried before sowing.
National Wetland Indicator Status
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1
(Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here
for map of regions.
Record Last Modified: 2010-06-07
Research By: JAM