Project Description
Acanthocereus tetragonus
Fairy Castle Cactus
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Quick Look:
Partial sun to partial shade
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Can be grown indoors if given enough light
Typical water needs for a succulent
Plant grows up to 6′ (1.8 m) tall
Zone 10a (Minimum 30° F | -1.1° C)
Not cold hardy
Propagation by stem cuttings and seeds
Generally non-toxic
Actively grows in Spring and Fall
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Care and Propagation Information
General Care for Acanthocereus tetragonus “Fairy Castle Cactus”
Acanthocereus tetragonus “Fairy Castle Cactus” is a wonderful succulent for beginners. It grows slowly and does well indoors. The name Acanthto comes from the Greek word akantha meaning “thorn.” This is good to remember when handling this cacti, as it has many spines.
Watering
Acanthocereus tetragonus “Fairy Castle Cactus” has typical watering needs for a succulent. It’s best to use the “soak and dry” method, and allow the soil to dry out completely between waterings. Water less during Winter months.
Where to Plant
“Fairy Castle Cactus” is not cold hardy, so if you live in a zone that gets colder than 30° F (-1.1° C), it’s best to plant this succulent in a container that can be brought indoors. It does well in partial sun to partial shade.
Pairs Well With
How to Propagate Acanthocereus tetragonus “Fairy Castle Cactus”
Acanthocereus tetragonus “Fairy Castle Cactus” can be propagated from stem cuttings or seeds, although you may experience the best success with stem cuttings.
Cuttings
To grow “Fairy Castle Cactus” from cuttings, use a sterile, sharp knife or pair of scissors. Remove a stem from the main plant, and allow it to callous for several days before placing on well-draining soil. Water whenever the soil has dried out completely.
Seeds
“Fairy Castle Cactus” can be propagated from the seeds of its fruit, although this is not recommended as it’s such a slow grower. Sow your seeds in a well-draining soil. You can grow “Fairy Castle Cactus” seeds outdoors if you live in an zone above 9a. If you live in a cooler area, you can begin sowing indoors under a grow light or on a seed mat.
Additional information
There are many differing opinions on how “Fairy Castle Cactus” should be named and classified. It is thought to be a dwarf version of Cereus hildmannianus uruguayanus, or a mostrous form of Acanthocereus tetragonus.
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What time of year should I propagate my Castle?
In the Spring or Summer.
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