Cleistocactus winteri, commonly known as the Golden Rat Tail Cactus, is a captivating species native to South America. This columnar cactus can reach up to 3 meters in height and 10 centimeters in diameter. It features long, cylindrical stems adorned with golden-yellow spines and fine hairs, growing in a cascading manner that gives the plant its distinctive appearance.
Cleistocactus winteri is easy to care for, requiring minimal watering and withstanding high temperatures and low humidity levels. It thrives best in well-draining soil and bright sunlight, though it can also do well in partial shade.
During the summer months, the Golden Rat Tail Cactus produces small pink or red flowers that attract pollinators like bees and butterflies. These flowers are followed by small red fruits containing black seeds.
This cactus is popular as an ornamental plant due to its unique appearance, low maintenance needs, and versatility in growing both indoors and outdoors with appropriate care. However, due to its sharp spines, it should be handled carefully to avoid injury.
Overall, Cleistocactus winteri is an intriguing addition for any cactus enthusiast or anyone seeking a low-maintenance, visually appealing houseplant!
Golden rat tail is generally disease-resistant and fares well under normal care, rarely becoming ill. It can, however, be vulnerable to mealybugs; these pests may inflict some damage but are typically not a serious threat. Regarding care, Golden rat tail is drought-tolerant and does not require frequent watering. It can withstand long intervals without water and needs little fertilizer. That said, it is highly prone to root rot if kept in poor lighting and overwatered. Overall, Golden rat tail is a good option for people who prefer to spend less time on plant care, but it remains important to understand and meet its basic needs. It is particularly suitable for individuals who are often away for extended periods and may forget to water their plants regularly.
How to keep Cleistocactus Winteri.
Light
Golden rat tail does best in locations that get plenty of light every day, though it can cope with spots that have somewhat less illumination. In its native environment it grows in places soaked with ample sunshine. Too much light intensity can cause sunburn, while too little can restrict flowering and growth.
Water
The Golden Rat Tail is a succulent that thrives in arid conditions and requires minimal watering, only about once every three weeks. It is typically grown outdoors and benefits from seasonal rains. As a succulent, it stores water in its stems, making it ideal for xeriscaping and well-suited to dry climates.
Humidity
This plant prefers dry conditions, so don't mist it. However, watering it less often can also thrive in higher humidity.
Temperature
Golden rat tail does best in warm settings and needs higher temperatures during the growing season to support growth and metabolic activity. It prefers plenty of sunlight, suitable moisture levels, and good air circulation. However, it is vulnerable to harm from excessively low temperatures and too much watering. It’s important to maintain balance and avoid very high temperatures and overly dry conditions as well.
Fertilizer
For Golden rat tail, apply light doses of fertilizer once or twice a year during the growing season. Avoid fertilizing in winter and in summer while it is dormant. Reduce fertilizer for repotted plants and wait a couple of months after repotting before fertilizing. Fertilizing supports healthy growth and encourages blooms.
Pruning
The golden rat tail plant requires minimal pruning. Simply remove any withered flowers and branches regularly to help redirect nutrients toward healthy growth.
Pot & Repot
Repot the Golden rat tail in spring or summer, choosing a pot slightly larger than the current one that has good drainage. Use a sandy or gritty cactus mix that drains well. Handle the plant carefully to avoid its spikes. Let the cactus dry out before repotting to help prevent root rot. After repotting, wait for a week before watering so the roots can heal.
Botanical profile.
- Plant Type
- Succulent
- Life Cycle
- Perennial
- Genus
- Cleistocactus
- Family
- Cactaceae
- Hardiness Zone
- 9-11
- Mature Height
- 91 cm
- Mature Spread
- 46 cm
- Leaf Color
- Green
- Leaf Type
- Evergreen
- Flower Color
- Red, Orange
- Flower Size
- 5.08 cm
- Bloom Time
- Late spring, Summer, Early fall
- Planting Time
- Spring, Summer, Autumn
- Harvest Time
- Late summer, Fall
Other names.
Reader questions.
What should I do if I give my Golden rat tail plant too much or too little water?
Golden rat tail and other succulents can withstand long periods without water, so it's uncommon for them to suffer from underwatering. However, if you happen to forget to water your Golden rat tail for a month or more, you'll likely notice it looking thirsty or damaged from lack of watering. Signs of underwatering include a lacklustre and wrinkled appearance, dried-up or brown and crispy leaves, and completely dried-out soil. To remedy this, give your plant plenty of water by submerging the pot in water for 5-10 minutes until you feel moisture on the soil's surface. Overwatering is detrimental to a Golden rat tail and can potentially kill the plant if not addressed. Excess moisture over time can lead to root rot, which hinders the roots' ability to absorb nutrients and water from the soil. Root rot occurs when the soil becomes too wet, allowing fungi and bacteria to thrive and attack the roots. Symptoms of overwatering include yellow, swollen, and translucent organs that may burst from being filled with water. If left untreated, the plant may turn brown or black and easily fall off. It's important to check the soil to confirm overwatering as the cause since similar symptoms can be caused by other issues. Saving an overwatered plant is challenging but not impossible. Catching the problem early is crucial before significant damage occurs. If the roots are rotten, it's likely that the entire plant will die. To assess the roots and soil, carefully remove the plant from the pot, removing excess wet soil around the roots and rinsing them in room-temperature water. This helps eliminate any lurking fungus and provides a better understanding of root health. Dark brown or black, soft, mushy, or slimy roots indicate root rot. If most of the roots are affected, saving the plant may not be possible. However, if only a portion of the roots are affected and healthy roots remain, there's a chance for recovery. Trim any unhealthy-looking roots with a sterilized cutting tool. Dip the remaining firm, pale roots in a fungicide to eliminate any remaining spores. Repot the Golden rat tail in fresh, well-draining soil. While this method doesn't always work for succulents with root rot, in most cases, the plant can fully recover and produce new growth in the next growing season.
Why should I add plant food to my Golden rat tail?
To promote healthy growth and encourage mature specimens to bloom during the growing season, fertilizing Golden rat tail is recommended. Although this plant does store water and nutrients, adding plant food to the growing medium provides additional nutrients and support for optimal growth.
What are the sunlight requirements for Golden Rat Tail?
Golden Rat Tail (Cleistocactus winteri) requires full sun, which means it thrives in areas receiving more than 6 hours of sunlight daily. It can also tolerate partial sun, receiving about 3-6 hours of sunlight. It's essential to observe the movement of sunlight through your garden to pick the ideal spots that offer a balance of light and shade, ensuring the plants' wellbeing. In its natural habitat, Golden Rat Tail grows in areas with abundant sunshine, although too much light can cause sunburn, and insufficient light may inhibit blooming and growth.
What are the essential care tips for a Golden rat tail?
Golden rat tail, or Cleistocactus winteri, flourishes in warm environments and requires ample sunlight, proper moisture levels, and good ventilation. It is crucial to maintain higher temperatures during its growing season to facilitate growth and metabolism. However, care should be taken to prevent damage from excessively low temperatures and overwatering. In winter, the plant enters a dormant state and should be moved indoors if temperatures fall below 5°C, preferably near a south-facing window to ensure it receives as much sunlight as possible. If natural light is insufficient, supplemental lighting can be used. Watering should be reduced or halted when temperatures drop below 20°C to avoid root rot. In outdoor conditions, stop watering during cold temperatures and consider insulation methods such as wrapping the plant with plastic film or fabric.
How many times should I water my Golden rat tail?
The frequency of watering a Golden rat tail plant is not set in stone. To determine when to water, check the soil and only do so when it is completely dry. You can check this by either inserting your finger or using a moisture meter to assess the moisture below the surface. If you have planted the plant in a deep pot, you can use a stick or a chopstick to gauge the moisture. If it feels slightly damp, wait a few days and check again. In general, watering Golden rat tail every two weeks in summer and once a month in winter should suffice for most people. However, there are factors that can influence this watering schedule, which are listed below.
When should I fertilize my Golden rat tail plant?
Golden rat tail plants require only a small amount of fertilizer during the growing season, about 1-2 times a year. It is recommended to fertilize them in spring and autumn, avoiding winter and summer when the plant is dormant. When repotting, be cautious and reduce the amount of fertilizer used. It is also advisable to wait a couple of months after repotting before applying any fertilizer.
How can artificial lighting be used for Golden Rat Tail indoors?
Indoor Golden Rat Tail plants require adequate lighting for optimal growth. When natural sunlight is insufficient, especially in winter or less sunny spaces, artificial lights are beneficial. LED lights are recommended because they can be customized to provide specific wavelengths needed by your plants. Full sun plants need 30-50W/sq ft of artificial light, partial sun plants need 20-30W/sq ft, and full-shade plants need 10-20W/sq ft. The light source should be placed 12-36 inches above the plant to mimic natural sunlight, and most plants need 8-12 hours of light per day.
What should I do if my Golden rat tail experiences low temperatures?
Golden rat tail prefers high temperatures and does not tolerate low temperatures well. It thrives when the temperature is above 20°C and should be kept above 5°C during winter. Exposure to temperatures below 1°C might cause the plant to become weak, wilt, and become prone to root rot. In the event of mild frost damage without initial symptoms, you might notice the plant gradually withering after a week. If frost damage occurs, trim off the frostbitten areas, inspect the roots for rot, and cut off any rotted parts. You can propagate the plant through cuttings if necessary. It's important to move the plant indoors to a warmer environment and place it near a south-facing window for adequate sunlight. If the light is insufficient, consider using supplemental lighting.
What do I need to think about when watering my Golden rat tail plant?
To effectively water your Golden rat tail, consider a few key factors: the size of the container, type of soil, temperature, and humidity. First, choose a container with proper drainage holes to prevent water from accumulating. Keep in mind that smaller containers have less soil capacity and require more frequent watering, while larger pots retain moisture longer and need less frequent watering. Avoid using an oversized pot to prevent overwatering. Repotting should involve moving to a slightly larger container, preferably a shallow one as Golden rat tail has shallow roots. Watering frequency also varies with the seasons. In winter, when growth slows down and evaporation is reduced, watering should be less frequent. In contrast, during the active growing seasons of spring and autumn, more frequent watering is necessary. Additionally, the climate of your location plays a role. If you reside in a humid and rainy area, watering will be less frequent compared to a dry and arid climate. Remember that even within the same geographic location, conditions can differ based on the season and indoor heating or air conditioning usage. If planted in the ground, a well-established Golden rat tail typically relies on natural precipitation and dew, requiring minimal additional watering. However, during extended dry periods, supplemental watering may be needed. For container-grown plants, you can move them outside during suitable spring and summer temperatures but bring them indoors when temperatures drop. Keep in mind that potted Golden rat tail plants exposed to sunlight, even on shaded porches, generally require more water than those kept indoors.
When should I not add fertilizer to my Golden rat tail plant?
Golden rat tail, like other plants, goes through a dormancy period when it stops growing. During this time, it is recommended to refrain from fertilizing. This dormancy occurs in both summer and winter. Additionally, it is advisable to avoid applying fertilizer for a couple of months after repotting in the spring.
What are the symptoms of light deficiency in Golden Rat Tail?
When Golden Rat Tail is placed in rooms with suboptimal lighting, it may show several symptoms indicating light deficiency. These include smaller new leaves, leggy or sparse growth, faster leaf drop, slower or halted new growth, lighter-colored new leaves, and conditions like chlorosis (yellowing leaves due to lack of chlorophyll), sunscald (leaf damage from intense light), leaf curling (to reduce light exposure), wilting (loss of turgor pressure), and leaf scorching (brown, dry edges from excessive light).
How should I care for my Golden rat tail during extremely high temperatures?
During the summer, it's critical to keep Golden rat tail temperatures below 41°C. Exposure to temperatures above 45°C can halt the plant's growth, cause water loss, wilting, and increase susceptibility to sunburn. If your plant suffers from sunburn or root rot, remove the damaged parts immediately. To aid recovery and encourage growth, protect the plant from direct afternoon sunlight until it recovers. For plants affected by root rot due to overwatering, cease watering until new roots form, and the plant begins to show signs of recovery.