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 Peniocereus greggii
Author:   Nathaniel Lord Britton & Joseph Nelson Rose, 1909
Family:  Cactaceae
Origin:  Mexico, Texas
Soil:  Grit
Water:  Minimum
Sun:  Medium to Maximum
Thickness:  30 centimetres or more!
Height:  2 meters
Flower:  White
Propagate:  Seeds/Cuttings
Names:  Nightblooming Cereus, Night Blooming Cereus, Queen of the Night, Deer-horn Cactus, Sweet-potato Cactus
Synonyms:  Cereus greggii, Engelmann, 1848

Photo from

  This member of the Cactaceae family was given this name by Nathaniel Lord Britton and Joseph Nelson Rose in 1909. It is found in Mexico and Texas, growing in grit with little water and some to lots of sun. The caudex will grow up to 30 centimetres or more, the branches will reach for up to two meters. The large white flowers will appear at night.

The genera name from pene; 'thread' and Cereus another member of the Cactaceae family, as to plant form. The species name after Josiah Gregg, 1806-1850, an US-American cactus collector.

Photo by Shannon Henke,