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Lophophora fricii

Fric's Peyote

Overview

Lophophora fricii is a spineless, geophytic, slow-growing succulent subshrub belonging to the family Cactaceae. Highly prized among succulent collectors for its distinctive pale grey-green to yellow-green globose body and vibrant pink flowers, it requires careful cultivation due to its sensitive root system and chemical profile.

Taxonomy and Naming

Belonging to the genus Lophophora, this species was named in honor of the famous Czech botanist and cactus collector Alberto Vojtěch Frič. While some taxonomists historically grouped it under Lophophora diffusa, current botanical consensus often treats it as a distinct species or a well-defined subspecies due to its unique chemical markers and flower morphology 1.

Distribution and Habitat

This species is native to northern Mexico, predominantly found in the state of Coahuila 2. It grows in arid desert conditions, typically nestled in rocky limestone slopes, clayey flats, and alluvial soils, where it protects itself from excessive heat by shrinking almost completely into the ground.

Appearance

The plant has a globose, somewhat flattened stem that lacks spines entirely. Its ribs are numerous and usually wavy or spiraling, featuring woolly white areoles along the ridges. The flowers appear from the center of the crown during late spring and summer, presenting a beautiful shade of pink, magenta, or deep carmine 1.

Cultivation

In cultivation, Lophophora fricii requires an exclusively mineral-based substrate to prevent fungal infections. Watering should be deep but infrequent during summer, with a strict dry rest period throughout winter. Bright, filtered sunlight is necessary to maintain its natural, compact habit 2.

Common Cultivation Mistakes

The most prevalent error is using standard organic potting soils and watering during winter dormancy. This combination rapidly triggers root rot, destroying the delicate taproot system.

Bibliography

References

  1. Anderson, E. F. (2001). The Cactus Family. Timber Press. ↩
  2. Backeberg, C. (1961). Die Cactaceae, Band V. Gustav Fischer Verlag. ↩
Light

Bright Indirect Light

Requires bright, filtered sunlight. Protect from intense, direct afternoon sun to prevent epidermis scorching.

Watering

14-45 Days

Water strictly on a soak-and-dry cycle in spring/summer. Keep completely bone-dry throughout the winter.

Soil

Completely inorganic, porous, and fast-draining pumice and lava rock mix

Use an organic-free substrate composed of pumice, lava rock, zeolite, and coarse sand for ultimate drainage.

Safety

Contact/Ingestion Risk

Contains toxic alkaloids such as pellotine. Highly toxic if ingested by pets or humans.

Difficulty

Moderate

Moderate to hard due to the strict watering requirements and high vulnerability of the taproot to overwatering.

Native Habitat

Mexico (Coahuila)

Naturally distributed in the dry limestone basins and stony slopes around the Viesca region in Coahuila, Mexico, adapted to severe drought.

Frequently Asked Questions

Is Lophophora fricii toxic to pets?
Yes, it contains high amounts of alkaloids, making it highly toxic to cats, dogs, and other pets. Keep it in a secure location.
How often should it be watered?
In summer, water approximately every 14 days after checking that the soil is completely dry. Keep it totally dry during winter.
When should it be repotted?
Due to its very slow growth rate, repotting every 3-4 years in early spring in a deep, porous pot is sufficient.
Which soil mixture should be used?
Never use peat-based soils. Opt for a 100% mineral mix consisting of pumice, lava rock, clay pebbles, and limestone grit.
What is the minimum temperature it can survive in winter?
It can tolerate brief drops down to 5°C (41°F) provided it is kept absolutely dry, but it must be protected from freezing frost.
What is required for it to bloom?
Abundant bright indirect light in spring/summer and a cold, completely dry winter dormancy period will encourage blooming.
How large does Lophophora fricii grow?
It is slow-growing; individual stems rarely exceed 10-12 cm in diameter, though it may slowly clump over time by offsetting.
Can it be placed in direct summer sun?
It should be shielded from intense midday sun. Filtered windows or shade structures getting morning or late afternoon sun are ideal.
Why is the taproot so important?
The plant stores water in this thick root. In compacted, wet soils, this root cannot breathe and will rapidly rot, killing the plant.
Why is it confused with Lophophora williamsii (Peyote)?
Though visually similar, Lophophora fricii differs by its deep pink flowers, distinct rib structure, and absence of mescaline.