Light
Full Sun
Requires full sun, preferably at least 6 hours of direct sunlight daily.
Reference image Cylindropuntia × campii
Camp's Cholla
Overview
Cylindropuntia × campii is a rare, naturally occurring hybrid cactus species belonging to the Cactaceae family. Classified as a succulent shrub, it is highly adapted to arid desert environments and characterized by its intensely spiny, cylindrical jointed stems 1.
Taxonomy and Naming
The genus Cylindropuntia is distinguished from flat-jointed Opuntia species by its cylindrical stem segments. Cylindropuntia × campii represents a natural hybrid lineage, likely arising from parent species such as Cylindropuntia acanthocarpa and Cylindropuntia bigelovii found within its native range 2. The "×" in its scientific name denotes its hybrid origin.
Distribution and Habitat
This hybrid cactus is native to southwestern North America, specifically Arizona (USA). It thrives in desert plains, rocky slopes, and arid shrublands, typically growing in sandy, gravelly, and nutrient-poor soils with excellent drainage 1.
Appearance
Cylindropuntia × campii forms a multi-branched, shrubby structure. Its cylindrical stem joints are covered in prominent tubercles and sharp, barbed spines covered in paper-like sheaths. In late spring, it produces attractive flowers with variable coloration, ranging from greenish-yellow to bronze tones 2.
Cultivation
In cultivation, it requires very little attention. Successful growth depends on maximizing direct sunlight and replicating desert-like watering cycles. Irrigation should only occur when the soil is completely dry, with virtually no water given during the winter dormancy period.
Common Cultivation Mistakes
The most frequent mistakes are overwatering, insufficient light, and planting in heavy, clay-rich soils. These factors lead to root rot, loss of structural integrity, and susceptibility to fungal pathogens 1.
References
Watering
12-35 Days
Allow soil to dry out completely between waterings. Keep dry in winter.
Soil
Well-draining, sandy and gritty cactus potting mix
Requires a gritty, inorganic-heavy cactus mix with high porosity.
Safety
Contact/Ingestion Risk
Spines are sharp, barbed, and detach easily. Toxic/hazardous to pets.
Difficulty
Moderate
Moderate due to physical handling hazards, but very drought-tolerant.
Native Habitat
Southwestern USA, Arizona
Native to the dry desert plains and gravelly slopes of Arizona in the southwestern United States, where it thrives under harsh sun and extreme temperature fluctuations.
Frequently Asked Questions
Can Cylindropuntia × campii be grown indoors?
Yes, but it requires very high levels of direct sunlight. Indoors, place it by a bright south-facing window or use artificial grow lights.
How often should I water it in summer?
In hot summer months, water approximately every 10–14 days, but only after the potting medium is entirely dry.
What is the watering schedule in winter?
During winter dormancy, reduce watering drastically. Watering once a month or leaving the soil completely dry is usually sufficient.
What type of potting soil should be used?
Use a specialized cactus mix with high amounts of pumice, coarse sand, and perlite to ensure rapid drainage.
How can I encourage it to bloom?
To stimulate late spring blooming, allow the plant to experience a cool, dry dormancy period during the winter.
How fast does this cactus grow?
With adequate sunlight and proper watering, it has a moderate growth rate compared to other desert cacti, forming a shrubby structure over time.
Is it safe for pets?
No. The spines are extremely sharp, barbed, and detach easily, posing a severe physical hazard to curious pets.
What precautions should I take during repotting?
Always wear thick leather gloves or use tongs to handle the plant. Avoid watering for at least one week after repotting to allow root damage to heal.
Is it cold hardy?
It can tolerate short periods of light frost (down to -8°C) if kept completely dry. Cold, damp conditions will cause rot.
What does softening of the stem indicate?
Softening usually indicates root rot due to overwatering. Stop watering immediately, and take cuttings from healthy segments to propagate if the base is rotted.