Light
Bright Indirect Light
Bright indirect light or filtered sun. Protect from harsh afternoon summer sun.
Reference image Aylostera albiflora
White-flowered Aylostera
Overview
Aylostera albiflora (formerly Rebutia albiflora) is a small, heavily clustering cactus species within the family Cactaceae, widely admired for its profuse white-to-pale pink blossoms. Characterized by its miniature clustering habit, it forms dense mats of globose heads covered with fine, soft white spines 1.
Taxonomy and Naming
Originally described by Friedrich Ritter, this species has historically been classified under the genus Rebutia. Modern phylogenetic studies and morphological features support its placement within the resurrected genus Aylostera 2. The specific epithet 'albiflora' derives from Latin, meaning 'white-flowered', pointing to its signature blooms.
Distribution and Habitat
Native to Bolivia, specifically the Tarija department, Aylostera albiflora is found growing in rocky crevices and sheer cliffs at elevations ranging from 2,500 to 2,800 meters above sea level 1. It thrives in arid to semi-arid montane shrublands where drainage is absolute.
Appearance
The individual stems are globose to short-cylindrical, measuring only about 1.8 to 2.5 cm in diameter. It offsets freely from the base to create impressive cushions. The spines are short, bristly, and glass-white. The funnelform flowers arise from the lower body in spring, showcasing pure white petals with a soft pink blush.
Cultivation and Care
This species is highly rewarding and relatively easy to cultivate. It requires bright, filtered sunlight and excellent air circulation. The potting medium must be highly porous, consisting mainly of mineral elements. Water thoroughly during the active growing season only when the soil is completely dry, and keep dormant specimens dry in winter.
Common Cultivation Mistakes
The most prevalent failure is root rot triggered by overwatering or compacted soil with high organic retention 2. Insufficient light leads to etiolation, causing the natural globose stems to stretch weakly toward the light source.
References
Watering
10-30 Days
Water thoroughly when soil is dry in spring and summer; keep dry in winter.
Soil
Highly-drained, pumice and fine gravel mixture classic cactus soil
Well-draining mineral mix with plenty of pumice, perlite, and coarse sand.
Safety
Pet Friendly
Has fine, bristly spines that can irritate skin. Non-toxic to cats and dogs.
Difficulty
Easy
Very easy to maintain, provided you avoid overwatering and stagnant humidity.
Native Habitat
Bolivia (Tarija)
Discovered in high-altitude rocky terrains and cliffs in the Tarija region of Bolivia, growing under dry, mountainous conditions.
Frequently Asked Questions
Can Aylostera albiflora be grown indoors?
Yes, it can be grown indoors on a very bright south- or east-facing windowsill. Insufficient light will cause it to etiolate.
How often should I water it?
Water it only when the soil is completely dry during spring and summer (around every 10 days). In winter, keep it dry.
Which soil mix should I use?
A highly porous cactus and succulent mix with high ratios of pumice, lava rock, and coarse sand is ideal.
When does Aylostera albiflora bloom?
It blooms profusely with white-to-pinkish flowers from the lower part of the stems in late spring to early summer.
Where should I keep the cactus in winter?
It should be kept in a cool (5-10°C), dry, and bright room above freezing temperatures for its winter dormancy.
Is it toxic to pets?
No, it is non-toxic. However, due to its fine prickles, keep it out of reach of pets and children to avoid irritation.
What is its growth rate?
It has a slow to moderate growth rate, but easily offsets from the base to form dense, attractive mounds over time.
Why is the base of my cactus turning yellow and soft?
This is usually a sign of root rot due to overwatering. Stop watering immediately and repot the plant in fresh, dry soil.
How can I encourage it to bloom?
A cool, dry winter rest combined with plenty of bright sunlight in early spring will successfully trigger flowering.
When should I repot it?
Repot every 2-3 years in early spring, only when the root system has completely filled the pot or the cluster gets crowded.