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Queen of the Night, Organillo
Scientific Name: Selenicereus grandiflorus Britton & Rose
Synonym: Selenicereus hallensis, Cactus grandiflorus, Cereus grandiflorus, Cereus kunthianus, Selenicereus kunthianus
Family: Cactaceae
Queen of the Night, Organillo (Selenicereus  grandiflorus)
Stem of Selenicereus grandiflorus, picture from K. Schumann "Gesamtbeschreibung der Kakteen"
Recommended Temperature Zone:
USDA: 10-11

Frost Tolerance: Avoid frost

Minimum Avg. Temperature: 60F (15C)

Heat Tolerance: Needs extra humidity in Phoenix

Sun Exposure:

Origin: Eastern Mexico, Caribbean

Growth Habits: Climbing stems, 0.8 to 1 inch in diameter (2-2.5 cm), 5 to 8 ribs; areoles 0.4 to 0.6 in. (1-1.5 cm), with witish felt and hair; 7 to 11 needle-like spines, 0.16 to 0.4 in. long (4-10 mm), yellowish turning grey as they age

Watering Needs: Keep the soil moist and well drained.


Selenicereus grandiflorus, in Britton and Rose's The Cactaceae

Cultural Practices:
Use orchid substrate.

Blooming Habits:
White flowers 6 to 8 inches long or more, with outside segment yellowish. They have a spherical tuberculate ovary, covered with 0.4 inch long silky spines (1 cm) and yellowish hairs. The edible fruit is light yellow with a reddish tinge, 2-3 inches long (5-8 cm)

Fruiting Habits:

Las Cactaceas de Mexico

Check for Field Collection numbers at Ralph Martin's Site

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Desert-Tropicals is dedicated to provide gardening advice, gardening ideas, and information about flower of all kind for landscape and collections. We try to check carefully the identification of the plants on the illustrations as well as the other information from the page, but occasionally errors do occur. if you notice anything that needs to be changed please contact us. Thanks.

1998-2005 Philippe Faucon, All Rights Reserved.