Light
Filtered Sun
Requires bright filtered sun or direct light; insufficient light prevents flowering.
Reference image Echinopsis jajoana
Genel bakış
Echinopsis jajoana (synonym Lobivia jajoana) is a small, globose cactus species belonging to the Cactaceae family, highly prized for its stunningly vibrant flowers 1. It is especially famous among collectors for the distinctive dark, near-black or deep purple throat inside its colorful blossoms.
Sınıflandırma ve adlandırma
The species was historically classified under the genus Lobivia before modern molecular and phylogenetic classifications grouped it under the broader genus Echinopsis 2. The specific epithet "jajoana" honors the cactus collector Jajo.
Doğal yayılış ve habitat
This species is native to northwestern Argentina, particularly found in the high-altitude regions of Jujuy and Salta provinces 1. It thrives in montane tropical grasslands and rocky slopes at elevations between 2,000 and 3,000 meters above sea level 2.
Görünüm
The body is typically solitary and spherical, occasionally becoming short-cylindrical with age. It features distinct ribs with sharp, grayish spines. Its most remarkable feature is the large summer flowers, which can be red, yellow, or orange, contrasted by a striking dark purple or black center.
Kültürde bakım
In cultivation, it requires abundant sunlight and excellent drainage. Water regularly during the active summer growing season, allowing the soil to dry out completely between waterings, and keep completely dry in winter 1. It is frost-tolerant if kept dry.
Sık görülen bakım hataları
The most common mistake is overwatering during the cold winter dormancy period, which rapidly causes root rot. Insufficient sunlight leads to etiolation, where the plant stretches and loses its compact shape.
References
Watering
7-25 Days
Water thoroughly in summer when dry; keep completely dry during winter dormancy.
Soil
Well-draining, sandy and pumice-rich cactus soil mix
Requires extremely gritty, fast-draining soil rich in pumice and coarse sand.
Safety
Pet Friendly
Non-toxic, but sharp spines require cautious handling away from pets and children.
Difficulty
Easy
Very easy to care for, provided the dry winter dormancy requirement is respected.
Native Habitat
Northwestern Argentina (Jujuy, Salta)
Naturally occurs in the high-elevation rocky slopes and montane grasslands of the Andes, adapted to cool nights, intense sun, and dry winter conditions.
Frequently Asked Questions
How often should I water Echinopsis jajoana?
Water thoroughly in summer only when the soil is completely dry (about once a week), and keep it entirely dry during the winter months.
How do I get it to bloom?
You must provide a cold, dry winter dormancy period at temperatures around 5-10°C with no water to trigger spring and summer flower buds.
Is it toxic to pets?
It is non-toxic to cats and dogs, though its sharp spines can cause physical injury, so keep it out of reach.
What kind of soil does it prefer?
It thrives in a highly porous, well-draining mineral mix consisting of pumice, coarse sand, and minimal peat.
When should I repot this cactus?
Repot in early spring when the plant outgrows its container. Always use dry soil and wait a week before watering after repotting.
Is it frost resistant?
Yes, it can tolerate short periods of light frost down to -5°C, but only if the soil and atmosphere are completely dry.
What is its growth rate?
It is a slow to moderate grower, remaining quite compact and small as a miniature globose cactus.
Why is my cactus stretching and losing shape?
This is called etiolation and is caused by insufficient light. Move your cactus to a much brighter location with direct sun.
How long do the flowers last?
Individual flowers typically last for 1 to 2 days, but a healthy plant can produce successive blooms throughout the summer.
Can it stay outdoors in summer?
Yes, it benefits greatly from outdoor placement in summer, enjoying fresh air, high daytime heat, and direct sunlight.