Acanthocereus Tetragonus “Fairy Castle Cactus”

Acanthocereus tetragonus “fairy castle” comes from various species around the world is very popular as an ornamental plant

This plant is described by being a spread succulent that can grow as 70 cm tall.

The trunk is very green; It can be light green depending on the light conditions, even dark in color. 

It has 5 distinct points with various areolas nervous. 

Every areola contains many yellow spines and little white spiral spines.

Every areola can create another trunk. Because of this, you can see a huge central stem with various smaller branches on each side.

This type of species has very large green coloration flowers, but in this variety (Acanthocereus tetragonus), no flowers have been observed.

This species is native to Central America and part of the United States.

Currently, specimens of this cactus can be seen in collections around the world for its ornamental value, easy maintenance, and propagation.

Tips to take care of the Acanthocereus Tetragonus

This cactus is very easy to grow and needs minimal care for its optimal growth and branching of the central stem. 

But, it’s important to know the basic aspects of the plant to avoid health problems. Here I tell you how to take care for this plant.


Locate your succulent were it can receive intense light, but make sure not to place in direct sunlight; this could cause the leaf to burn; only during winter, you can place in direct sunlight for a few hours.

It also adapts to indoor cultivation with quite powerful artificial lighting sources.


This plant needs temperatures above 15°C/59°F for optimum growth. 

Temperatures below 10°C/50°F for long periods can cause stem and root rot.


This beautiful succulent does not require a special type of substrate; however, it should be very absorbent. Stagnant water in a poorly substrate will cause the fast rot of the succulent plant.

Watering Frequency


Watering for this plant is very easy, wait for the soil to dry before watering, the same goes for winter, usually every 15 days.

Plagues and diseases

This is a very strong succulent it resist almost all types of diseases and pests; you just have to be on the lookout for mealybug, to make sure they don’t attack your plant. Other than that, your plant will be ok.

The most successive harms are related to low temperatures and overwatering.

Pruning and transplant

You can shape the cactus by removing the ramifications that affect its aesthetics; branches must be removed with sterilized materials.

This cactus must be transplanted every 1-2 years because it produces many deep roots.


It is multiplied by cuttings of stems (the ramifications); branches should be removed using a sharp and disinfected object to avoid bacterial or fungal infections. 

You must wait a week for the cutting areas to dry and then sow in separate vessels or pot.

In two weeks, the first roots should appear, and you will have a new cactus.

“Fairy Castle Cactus” can be propagated from the seeds of its fruit, although this is not recommended as it’s such a slow process.


I hope this article has been very helpful. My intention is to motivate you and educate you to cultivate these beautiful succulents.

Plus, it’s always good to have plants around the house; it does help you connect with nature. 

If you have any questions, let me know.

Thank you for reading.