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PlantSnap
Plant Care
Torch cactus
(Cleistocactus acanthurus)
Also Known As
Torch cactus, Cleistocactus, Cactus de palo, Golden rat tail cactus
About This Plant
Cleistocactus acanthurus is a species of cactus native to Bolivia and Argentina. It is a columnar cactus that can grow up to 3 meters tall with a diameter of up to 15 cm. The stem is covered in spines, and it produces small red flowers in the summer.
Plant Care Instructions
Outdoor Size Range
6-10 feet (1.8-3 meters)
Light Requirements
Cleistocactus acanthurus requires full sun to partial shade. It is best to place it near a south-facing window if growing indoors.
Humidity Needs
Cleistocactus acanthurus prefers low humidity levels. It is best to avoid misting the plant or placing it in a humid environment.
Fertilizing Schedule
Cleistocactus acanthurus does not require much fertilizer. Fertilize it once a month during the growing season with a balanced cactus fertilizer.
Pruning Guidelines
This cactus does not require much pruning. Remove any dead or damaged branches with sterile pruning shears.
Common Pests and Diseases
Common pests for Cleistocactus acanthurus include mealybugs and spider mites. It is also susceptible to root rot if overwatered.
Indoor Size Range
24-36 inches (61-91 cm)
Watering Schedule
This cactus prefers to be kept on the dry side. Water it thoroughly when the soil is completely dry, and reduce watering in the winter.
Temperature Range
This cactus prefers warm temperatures between 65-80°F (18-27°C). It can tolerate cooler temperatures down to 50°F (10°C), but it is best to avoid temperatures below freezing.
Growing Season
The growing season for Cleistocactus acanthurus is from spring to fall.
Growing Difficulty Level
Cleistocactus acanthurus is an easy plant to grow as long as it is provided with the right growing conditions.
USDA Hardiness Zones
Cleistocactus acanthurus is hardy in USDA zones 9b-11.
Did You Know?
Cleistocactus acanthurus is also known as the 'Red Torch Cactus' due to its bright red flowers that resemble a torch.
