Tom Juul's Giant

Tom Juul's Giant (often abbreviated as TJG) is a prominent and highly sought-after cultivar of *Trichocereus* (syn. *Echinopsis*), typically classified as a *Trichocereus pachanoi* or a closely related intermediate form. It is characterized by its exceptionally thick, massive columns that can reach a much larger diameter than standard *T. pachanoi* specimens. The stems feature deep, rounded ribs (typically numbering 6 to 8) with relatively small, felted areoles. Spines are very short, inconspicuous, and light yellow to grey, often becoming nearly spineless on mature growth. The epidermis is a rich, dark green, sometimes exhibiting a glaucous blue-green sheen under optimal growing conditions.

The clone is named after Tom Juul, a legendary cactus collector from San Francisco, California, who originally sourced and propagated the plant. The original specimen was discovered growing in a residential yard in San Francisco, though its ancestral botanical origins are believed to lie in the Andean regions of South America (likely Peru or Ecuador). It has since become a foundational clone in the ornamental cactus community.

Tom Juul's Giant is a robust and resilient grower. It performs best in a highly inorganic, well-draining soil mix to prevent root rot. During the active spring and summer growing seasons, it responds well to regular watering and balanced fertilization, but it should be kept completely dry during winter dormancy. While it can tolerate full sun, providing light afternoon shade can help preserve its deep green color and prevent sunburn on the broad ribs.

Analysis of the discussion.

Lindsay Anderson Peace is rated a 7/10 for providing a verifiable and specific commercial source (Cactus Affinity, a well-known specialty nursery) currently distributing the clone, offering practical utility for collectors seeking authentic specimens.