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Gymnocalycium Mihanovichii ‘Trex Clone’: A Unique and Rugged Beauty

The Gymnocalycium mihanovichii ‘Trex Clone’ is a rare and highly sought-after cactus, beloved for its distinctive textured body, fierce spines, and deep, moody coloration. This cultivar is a true showstopper in any succulent collection, standing out due to its almost prehistoric, rugged appearance—hence the fitting name “Trex Clone.”


What Makes the Trex Clone Special?

Unlike the traditional Gymnocalycium mihanovichii, which is known for its smooth and sometimes brightly colored form, the Trex Clone takes on a darker, more sculptural look.

Key Characteristics:

  • Deep, Dark Coloration – This cactus boasts a rich, dark purple to blackish-brown hue, giving it an almost stone-like appearance. The deep ridges and furrows add to its textured aesthetic.
  • Thick, Woolly Areoles – One of its standout features is the prominent, woolly areoles, which contrast beautifully against its dark body. These fuzzy white tufts sit at the base of the spines, adding to its prehistoric and exotic look.
  • Long, Fierce Spines – The thin, curved spines radiate outward, creating a wild, untamed look. Some specimens may develop slightly hooked spines, adding to their intimidating yet stunning presence.
  • Compact and Slow-Growing – Like most Gymnocalyciums, the Trex Clone remains relatively small, typically reaching about 3-5 inches (8-12 cm) in diameter, making it an excellent choice for container cultivation.

How to Care for Gymnocalycium Mihanovichii ‘Trex Clone’

Despite its fierce look, this Gymnocalycium is relatively easy to care for as long as you follow a few key guidelines.

Light Requirements

  • Prefers bright, indirect sunlight or morning sun with afternoon shade.
  • Direct exposure to harsh midday sun can scorch the plant, especially in extreme summer heat.

Soil and Potting Mix

  • A well-draining cactus mix is essential. Add perlite, pumice, or coarse sand to improve aeration.
  • Use a shallow, well-draining pot (terracotta is recommended) to prevent excess moisture retention.

Watering Routine

  • Follow the “soak and dry” method:
    • Water deeply when the soil is completely dry.
    • Reduce watering during the cooler months (fall and winter) when the cactus goes dormant.
    • Avoid overwatering, as Gymnocalycium species are prone to root rot.

Temperature and Humidity

  • Ideal temperatures: 65-85°F (18-29°C).
  • Cold-sensitive: If temperatures drop below 50°F (10°C), move the cactus indoors to protect it from frost damage.

Fertilization

  • Use a diluted cactus fertilizer (low in nitrogen) once a month during the growing season (spring and summer) to encourage healthy growth.
  • Avoid fertilizing in the winter months when the plant is dormant.

Propagation

  • This cactus can be propagated through offsets (pups), though it is a relatively slow-growing variety.
  • Grafting onto a Hylocereus rootstock is a popular technique to encourage faster growth and better coloration.

A Collector’s Dream Plant

The Gymnocalycium mihanovichii ‘Trex Clone’ is a must-have for cactus enthusiasts and collectors who appreciate unusual and striking forms. Its prehistoric, textured body and long, wild spines make it a standout plant that thrives with minimal care.

If you’re looking to add a bold, dramatic piece to your collection, the Trex Clone is a perfect choice—resilient, exotic, and undeniably one-of-a-kind.

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