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Cylindropuntia anteojoensis

Anteojo Cholla

Overview

Cylindropuntia anteojoensis is a resilient, cylindrical cactus species belonging to the Cactaceae family. Highly adapted to harsh arid climates, it is appreciated by succulent enthusiasts for its intricate, heavily armed jointed stems and structural growth form.

Classification and naming

Classified within the genus Cylindropuntia, formerly included in Opuntia, this species is distinguished by its cylindrical jointed segments rather than flat pads 1. The specific epithet 'anteojoensis' refers to its type locality or associated geographic features in Coahuila, Mexico.

Distribution and habitat

This species is native to northern Mexico, particularly within the arid state of Coahuila and the surrounding Chihuahuan Desert region 2. It thrives in limestone soils, stony hillsides, and desert shrublands where it experiences hot, dry summers and cool, dry winters.

Appearance

The plant features jointed, cylindrical stems that are greyish-green in color, adorned with prominent tubercles. The areoles bear sharp, dense spines covered in papery sheaths, a typical feature of chollas. Its flowers are usually pale yellow or yellowish-green, developing into dry, spiny fruits.

Cultivation

In cultivation, it demands full sun exposure and an extremely porous, mineral-based substrate. Water should be applied only when the soil is dry to the core. During winter, it requires a dry rest period with almost no water to prevent rot and withstand low temperatures.

Common cultivation mistakes

The most prevalent errors include overwatering, planting in moisture-retaining organic soils, and keeping the plant in shaded or poorly ventilated indoor spots. These conditions rapidly trigger root rot and etiolation.

References

  1. Plants of the World Online (POWO). Royal Botanic Gardens, Kew. URL: http://www.plantsoftheworldonline.org ↩
  2. IUCN Red List of Threatened Species. International Union for Conservation of Nature. URL: https://www.iucnredlist.org ↩
Light

Full Sun

Requires 6+ hours of direct sunlight daily; unsuitable for low-light indoor areas.

Watering

14-45 Days

Water deeply but only when the soil is 100% dry. Keep dry in winter.

Soil

Well-draining, sandy and calcareous cactus soil mix

Requires highly mineralized, fast-draining soil with pumice, coarse sand, and limestone gravel.

Safety

Risky for Pets

Equipped with very sharp, easily detached spines and glochids. Keep away from pets and handle with thick gloves.

Difficulty

Moderate

Moderate. Easy if underwatered, but highly sensitive to damp and humid conditions.

Native Habitat

Mexico (Coahuila)

Native to the limestone flats and desert scrublands of northern Mexico, specifically within the dry environments of the Chihuahuan Desert.

Frequently Asked Questions

Can Anteojo Cholla be grown indoors?
Yes, but only if placed in a highly sun-exposed location like a **south-facing window** or supplemented with artificial grow lights.
How often should I water this cactus?
Water roughly **every 14 days** in summer once the soil is bone-dry. In winter, withhold watering almost completely.
What is the best soil mix?
A mix of 50% drainage materials (pumice, perlite, coarse sand) and 50% loamy soil with a bit of limestone is ideal. Avoid pure peat soils.
Is it cold hardy during winter?
It can tolerate brief, light frosts down to **-5°C (23°F)** provided the soil is completely dry. In freezing climates, bring it indoors.
Is it toxic to pets?
While not biochemically toxic, its **extremely sharp, barbed spines** pose a severe physical hazard to pets and should be kept out of reach.
How can I encourage it to bloom?
Ensure it receives maximum direct sunlight in summer and allow it a cool, completely dry winter dormancy period.
Is it a fast-growing cactus?
No, it grows at a **slow to moderate** rate, and its growth is significantly slower when confined to container cultivation.
Why is my cactus turning yellow and soft?
Softness and yellowing are classic signs of **root rot from overwatering**. Stop watering immediately and check the roots for damage.
Which pot type should I choose?
An unglazed **terracotta pot** with drainage holes is best, as it allows excess moisture to evaporate quickly from the sides.
How is it propagated?
Take stem cuttings in spring or summer, let the cut end callus for a few days, and then plant it in dry, sandy cactus soil.