Ball Cactus Rebutia mentosa subsp. mentosa
ABOUT
The plant known commonly as Rebutia mentosa subsp. mentosa presents itself as a small, spherical to barrel-shaped cactus. Its notable appearance originates from its dense covering of spines that can range from white to honey-yellow in coloration. These spines provide not only a protective layer but also lend the plant a soft, fuzzy look which contrasts sharply with the typical harshness associated with cacti. The body of the plant is green, potentially featuring a tinge of blue, and is divided into numerous ribs adorned with areoles from which the spines emerge. During the flowering season, the plant is capable of producing an eye-catching array of blooms. These flowers emerge near the crown, their colors a vibrant mix of red, orange, or pink. The blossoms are funnel-shaped and can be quite large relative to the size of the plant, often creating a striking display that appears to encircle the cactus like a colorful crown. After the blooming period, the flowers give way to small, round fruits that may present a reddish hue. Overall, the plant has a charming appearance that attracts collectors of succulents and cacti.
About this plant
NamesFamily
Cactaceae
Synonyms
Balloon Cactus, Green Crown, White-haired Crown
Common names
Rebutia minuscula, Echinocactus minusculus, Rebutia minuscula var. wessneriana, Rebutia wessneriana, Mediolobivia minuscula, Mediolobivia wessneriana, Rebutia deminuta, Rebutia mentosa subsp. elata, Rebutia violaciflora, Sulcorebutia mentosa, Weingartia deminuta, Weingartia mentosa
ToxicityTo humans
Crown Cactus (Rebutia mentosa subsp. mentosa) is not known to be toxic to humans. There are no known toxic effects from ingesting this plant, and it generally does not cause poisoning symptoms. However, it is always advised to exercise caution and avoid consuming any plant parts unless they are known to be safe to eat.
To pets
Crown Cactus (Rebutia mentosa subsp. mentosa) is not considered toxic to pets. It should not typically cause any poisoning symptoms if ingested by animals. Nonetheless, it is always best to prevent pets from consuming plants not intended for their diet to avoid any potential digestive upset or unforeseen reactions.
CharacteristicsLife cycle
Perennials
Foliage type
Evergreen
Color of leaves
Varies
Flower color
Varies
Height
0.1 feet (3 cm)
Spread
0.1 feet (3 cm)
Plant type
Cactus
Hardiness zones
Varies
Native area
Bolivia
Benefits
General Benefits- Ornamental Value: Adds aesthetic appeal to gardens and homes with its vibrant, colorful flowers and spherical shape.
- Low Maintenance: Requires minimal care, making it suitable for busy individuals or those new to gardening.
- Drought Tolerant: Adapts well to arid conditions, conserving water and surviving in climates with limited rainfall.
- Compact Size: Ideal for small spaces, terrariums, or as a desk plant due to its small stature.
- Mental Wellbeing: Contributing to mental health by providing a sense of achievement and relaxation through caring for it.
- Pollinator Attraction: Flowers can attract bees and other pollinators, supporting local ecosystems.
Medical PropertiesThis plant is not used for medical purposes.
Air-purifying QualitiesThis plant is not specifically known for air purifying qualities.
Other Uses- Photography subject: Rebutia mentosa, commonly known as the Crown Cactus, with its vibrant flowers, serves as an attractive subject for macro and botanical photographers seeking to capture its intricate details.
- Educational model: Crown Cactus can be used in botanical education to illustrate the traits of cacti and succulents, such as water retention, spination, and flowering patterns.
- Terrarium ornament: Due to its small size, the Crown Cactus is well-suited for inclusion in dry terrariums or miniature desert scenes for decorative purposes.
- Feng shui: Some practitioners may include Crown Cactus in their feng shui arrangements, believing it brings positive energy to the home and helps in balancing chi.
- Thematic gardening: It can be a part of thematic gardens such as 'rock gardens' or 'xeriscapes' to reduce water usage while providing aesthetic value.
- Art inspiration: Artists may draw inspiration from the unique form and color of the Crown Cactus for various forms of art, including painting, sculpture, and textile design.
- Jewelry making: Miniature replicas of the Crown Cactus can be crafted into unique pieces of jewelry, such as pendants and brooches, for those who enjoy botanical-themed accessories.
- Stress relief: Taking care of a plant like the Crown Cactus can be a relaxing hobby that offers stress relief and a sense of accomplishment through nurturing and observing its growth.
- Gift plant: With its appealing aesthetics and ease of care, the Crown Cactus makes a popular gift for plant enthusiasts and beginners alike.
- Scientific study: While not unusual, the Crown Cactus may be used in studies focusing on plant adaptation, reproduction, and survival strategies in arid environments.
Interesting Facts
Feng ShuiThe Crown Cactus is not used in Feng Shui practice.
Zodiac Sign CompitabilityThe Crown Cactus is not used in astrology practice.
Plant Symbolism- Resilience: Rebutia mentosa, commonly known as the Crown Cactus, is a plant that thrives in harsh environments, symbolizing the ability to overcome challenging situations.
- Adaptability: The Crown Cactus's capacity to adjust to extreme conditions speaks to its symbolic meaning of adaptability and flexibility in life.
- Independence: This cactus favors growing alone or in small clusters, representing independence and self-reliance.
- Beauty and Vibrancy: The bright, showy blooms of the Crown Cactus symbolize beauty and vibrancy, reminding us to find joy and vitality even in tough conditions.
WaterCrown cactus should be watered moderately during the growing season; allow the soil to dry out between waterings to avoid waterlogging. Typically, watering once a week with about 4 ounces of water is sufficient. In winter, reduce watering to once a month or less, providing minimal moisture to prevent the roots from drying out completely. Always check the top inch of soil for dryness before adding water to ensure the plant does not sit in wet substrate.
LightThe best light condition for crown cactus is bright and indirect sunlight. It should be placed in a location where it can receive plenty of light without the risk of being scorched by direct midday sunlight. An east-facing or west-facing window where the plant can enjoy morning or afternoon sun would be ideal.
TemperatureCrown cactus thrives in temperatures between 70°F and 80°F, but it can tolerate a range from 50°F to 90°F. Avoid exposing the plant to temperatures below 50°F, as it can damage the plant. Maintaining a stable environment without drastic temperature changes is ideal for its health and growth.
PruningPruning the crown cactus is typically not required due to its compact growth habit. It may be necessary to remove dead or damaged spines for the health of the plant. The best time for any pruning would be during the spring, at the beginning of the growing season, to allow for quick recovery.
CleaningAs needed
SoilThe Crown Cactus (Rebutia mentosa subsp. mentosa) thrives best in a well-draining soil mix composed of coarse sand, perlite or pumice, and loam or potting soil in equal parts. The pH should be mildly acidic to neutral, ranging from 6.0 to 7.5, to match the cactus's natural habitat.
RepottingRepot the Crown Cactus every 2 to 3 years or when it has outgrown its current pot, to refresh the soil and encourage continued growth. Fall or late winter is the optimal time for repotting, just before the growing season begins.
Humidity & MistingThe Crown Cactus prefers a dry environment with low humidity levels, as it is adapted to arid conditions. Maintaining humidity levels around 10% to 30% is ideal for this cactus.
Suitable locationsIndoor
Place Crown Cactus in bright, indirect light indoors.
Outdoor
Grow Crown Cactus outdoors in full sun to partial shade.
Hardiness zone
9-11 USDA
Life cycleRebutia mentosa subsp. mentosa, commonly known as Crown Cactus, begins its life cycle when its seeds germinate in warm, moist soil conditions. As a seedling, it slowly develops fleshy, spherical to columnar stems adorned with clusters of spines and reaches sexual maturity within a few years. The mature Crown Cactus then blooms in the spring to early summer, producing vibrant funnel-shaped flowers that attract pollinators. After pollination, it develops small, fleshy fruit containing seeds. The seeds are then dispersed by wind, water, or animals, allowing for the growth of new plants. Throughout its life, which can span several decades, the Crown Cactus continues to grow slowly and may produce offsets, contributing to clonal reproduction and the thickening of cactus clusters.
PropogationPropogation time
Spring-Early Summer
The Rebutia mentosa subsp. mentosa, commonly known as the Crown Cactus, is best propagated by seed or by offsets during the spring and early summer seasons, when the plant is actively growing. The most popular method is through offsets, as it is quicker and usually more successful than seed germination. To propagate by offsets, wait until the little pups or offsets form at the base of the mother plant and have grown to a reasonable size. Carefully remove the offsets using a sharp, clean knife or by gently twisting them off, ensuring they have some roots attached if possible. Allow the cut surface to callous over for a few days to prevent rot. Once calloused, plant the offset in a well-draining cactus soil mix, and water sparingly until it establishes roots and starts growing, which can be verified by a gentle tug resistance.
