Rat Tail Cactus, Monkeys Tail Cactus, Hildewintera colademononis, Cleistocactus winteri subsp. colademono, Winterocereus colademononis
Cleistocactus colademononis, also known as the Monkey Tail Cactus or Rat Tail Cactus, is a striking and unusual cactus species admired for its long, trailing stems covered in soft, white hairs. This species is highly popular due to its unique appearance and ease of cultivation. Whether grown in hanging baskets or trained along structures, it adds a distinct aesthetic appeal to any garden or indoor space.
The Monkey Tail Cactus Cactus is a member of the Cactaceae family, which also includes the popular Chrismas cactus, prickly pear (opuntia), pincushion cactus (mammillaria), and the iconic saguaro cactus and San Pedro cactus.
Cleistocactus colademononis is a perennial cactus species with long, cylindrical stems covered in dense, soft, white hairs. These stems can trail and cascade over the edges of containers, giving the plant its common name, Monkey Tail Cactus. The hairs serve as a protective layer and give the plant a striking, fuzzy appearance. The cactus produces vibrant red or orange tubular flowers that emerge from the upper portion of the stems.
This cactus is native to the Bolivian Andes, specifically in the regions of Santa Cruz. It grows at high elevations, between 4,200 and 5,000 feet (1,300-1,500 meters), where it thrives in rocky environments with plenty of sunlight and well-drained soil. The plant is well adapted to the cool, dry climate of its native habitat, where it can withstand temperature fluctuations.
The Monkey Tail Cactus is a vigorous, epilithic cactus (growing on rocks), branching at the base. It has a trailing, sprawling growth habit, making it ideal for hanging baskets or containers where its stems can cascade. The plant grows relatively slowly but can produce long, vine-like stems that can reach impressive lengths.
The individual stems can grow up to 8 feet (2.5 meters) in length.
One of its most attractive features is its bright red, tubular flowers, which measure about 1-3 inches (2-7 cm) across and emerge from the upper part of the stems. The contrast between the bright flowers and the plant’s white, furry stems creates a stunning visual display.
This flowering cactus cactus generally blooms from late spring to early summer, though it may bloom sporadically throughout the year under the right conditions. The flowers are relatively long-lasting and can stay open for several days, providing color and vibrancy to the plant’s overall appearance.
The cylindrical stems can grow up to 8 feet (2.4 meters) in length, with a diameter of about 1.5 inches (3-4 cm). The stems are covered in soft, white hairs that can grow several centimeters long, giving the plant its signature “monkey’s tail” appearance. Beneath the hairs, the plant has small, fine spines, though these are not particularly sharp or dangerous. The spines and hairs work together to protect the plant from herbivores and to shield it from the harsh sunlight of its native habitat.
The Monkey Tail Cactus has been recognized for its ornamental value and ease of cultivation. It has received the Award of Garden Merit from the Royal Horticultural Society (RHS), highlighting its attractiveness and reliability in cultivation.
This cactus is hardy in USDA zones 9-11, meaning it can tolerate temperatures as low as 28°F (-2°C) for short periods. However, it prefers warmer climates and should be protected from frost. In cooler regions, it is best grown indoors or in a greenhouse during winter.
The bright red flowers are highly attractive to hummingbirds and butterflies, which help pollinate the plant. Birds and small mammals consume the small fruits that follow the blooming period, aiding in seed dispersal.
This cactus is non-toxic to humans and pets. However, caution should be taken when handling the plant, as its soft spines can still cause mild irritation if touched.
The spiny nature of this cactus makes it naturally resistant to deer and rabbits, which tend to avoid browsing on the plant.
The Monkey Tail Cactus is highly drought-tolerant and thrives in arid conditions. It stores water in its stems, allowing it to survive extended periods without rainfall.
Cleistocactus colademononis is not considered invasive. It grows slowly and does not spread aggressively in cultivation or natural habitats. Its growth habit is manageable, and it does not pose a threat to local ecosystems.
One of the key elements to successfully growing a Monkey Tail Cactus is providing the right amount of light. This cactus thrives in bright, indirect light, or partial sunlight.
Like most cactus plants, the Monkey Tail Cactus requires well-draining soil to prevent root rot. In its native habitat, this cactus grows in rocky, gritty soils that allow water to drain quickly.
The watering needs of a Monkey Tail Cactus are similar to those of other desert cactus plants—it prefers to be kept on the dry side. Overwatering is one of the most common causes of issues with this plant, so it’s essential to get the watering schedule right.
The Monkey Tail Cactus is well-suited to warm, dry climates, and it prefers temperatures between 60-80°F (16-27°C) during the growing season. However, it can tolerate brief periods of colder temperatures down to 28°F (-2°C).
During the winter, the Monkey Tail Cactus thrives in cooler temperatures between 50–55°F (10–13°C). A cool rest period during this season is essential for encouraging abundant flower production.
The Monkey Tail Cactus is not a heavy feeder, but it will benefit from regular fertilization during its growing season.
The Monkey Tail Cactus doesn’t require much pruning, but it’s a good idea to keep an eye on the plant’s health and remove any dead or damaged stems.
If any stems become damaged, dried, or unsightly, use sterilized pruning shears to trim them. This encourages new growth and keeps the plant looking tidy.
While the Monkey Tail Cactus is generally resistant to pests and diseases, it can occasionally be affected by mealybugs, scale insects, and spider mites. If you notice pests, treat the plant with insecticidal soap or neem oil. It’s important to catch infestations early to prevent damage to the plant.
Overwatering is the most common cause of disease, leading to root rot. Always ensure that the soil dries out completely between waterings, and avoid letting the cactus sit in water.
Propagating the Monkey Tail Cactus is relatively easy, and the best method is using stem cuttings.
As a trailing cactus, the Monkey Tail Cactus is well-suited to hanging baskets or shallow pots that allow its long stems to cascade down.
Repotting Frequency: You’ll need to repot your Monkey Tail Cactus every 2-3 years as it grows. Repotting in spring, just before the growing season, is ideal.
How to Repot: Choose a slightly larger pot with good drainage. Gently remove the cactus from its current pot, being careful not to damage the fragile stems. Shake off excess soil, inspect the roots for any signs of rot, and repot in fresh cactus soil.
To encourage your Monkey Tail Cactus to bloom, follow these key steps:
Ensure the plant receives plenty of bright, indirect sunlight. While it can tolerate some direct sunlight, too much intense light can scorch the delicate stems. A south- or west-facing window is ideal for indoor growth.
During the winter months, provide a cooler environment, with temperatures between 50-55°F (10-13°C). This period of cool dormancy is crucial for promoting flowering during the growing season.
Water regularly during the growing season (spring and summer) but let the soil dry out completely between waterings. Reduce watering in the winter months when the plant is resting to prevent overwatering and root rot.
Use a balanced cactus fertilizer once a month during spring and summer to give the plant the nutrients it needs for healthy growth and flower production. Avoid fertilizing in winter.
Yes, you can touch a Monkey Tail Cactus (Cleistocactus colademononis), but it is important to do so cautiously. The cactus has fine, hair-like spines that can still cause irritation if handled without care. Wearing gloves is recommended.
Monkey Tail Cacti can tolerate being root-bound for a while and may even thrive in slightly confined spaces. However, over time, repotting into a slightly larger pot with well-draining soil is beneficial for healthy growth.
A Monkey Tail Cactus needs water when its soil becomes completely dry. You can check by sticking your finger about 1-2 inches into the soil; if it feels dry, it’s time to water. During the growing season, it prefers regular watering but should be allowed to dry out between watering sessions.
A skinny or leggy appearance in your Monkey Tail Cactus is often a sign of inadequate light. These cacti need bright, indirect sunlight to thrive. If they’re not receiving enough light, they will stretch out, leading to a thinner appearance.
Yellowing can be due to several factors, including overwatering, poor drainage, or too much direct sunlight. Ensure the cactus is planted in well-draining soil and is not exposed to excessive moisture. If it’s in direct sunlight for too long, consider moving it to a location with bright, indirect light.
A balanced, low-nitrogen fertilizer works well for Monkey Tail Cacti. You can use a cactus-specific fertilizer diluted to half strength during the growing season (spring and summer). Fertilize every 4-6 weeks during active growth and avoid feeding during the dormant winter months.
| Hardiness |
9 - 11 |
|---|---|
| Plant Type | Houseplants, Cactus & Succulents |
| Plant Family | Cactaceae |
| Common names | Cactus |
| Exposure | Full Sun, Partial Sun |
| Season of Interest | Spring (Early, Mid, Late), Summer (Early, Mid, Late), Fall, Winter |
| Height | 8' (240cm) |
| Maintenance | Low |
| Water Needs | Low |
| Soil Type | Sand |
| Soil pH | Acid, Alkaline, Neutral |
| Soil Drainage | Well-Drained |
| Characteristics | Showy, Evergreen |
| Tolerance | Drought, Deer, Rabbit, Dry Soil |
| Attracts | Butterflies, Hummingbirds |
| Garden Uses | Hanging Baskets, Patio And Containers |
| Garden Styles | Gravel and Rock Garden |
| Hardiness |
9 - 11 |
|---|---|
| Plant Type | Houseplants, Cactus & Succulents |
| Plant Family | Cactaceae |
| Common names | Cactus |
| Exposure | Full Sun, Partial Sun |
| Season of Interest | Spring (Early, Mid, Late), Summer (Early, Mid, Late), Fall, Winter |
| Height | 8' (240cm) |
| Maintenance | Low |
| Water Needs | Low |
| Soil Type | Sand |
| Soil pH | Acid, Alkaline, Neutral |
| Soil Drainage | Well-Drained |
| Characteristics | Showy, Evergreen |
| Tolerance | Drought, Deer, Rabbit, Dry Soil |
| Attracts | Butterflies, Hummingbirds |
| Garden Uses | Hanging Baskets, Patio And Containers |
| Garden Styles | Gravel and Rock Garden |
How many Cleistocactus colademononis (Monkey Tail Cactus) do I need for my garden?
| Plant | Quantity | |
|---|---|---|
| Cleistocactus colademononis (Monkey Tail Cactus) | N/A | Buy Plants |
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Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas.
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