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“P7” is a Trichocereus clone of uncertain botanical classification, though community reports suggest it may either be a *Trichocereus huanucoensis* phenotype or part of an Australian hybrid series. Detailed morphological descriptions regarding rib count, spination, and exact epidermis color remain undocumented in the primary discussion.
The origin of the “P7” clone points to two distinct possibilities depending on the geographic region: * Australian Origin: The clone is highly likely to be one of a series of eight “P” clones (P1 through P8) introduced in Australia by Miguel El Stillmano. * United States Origin: There is speculative association linking the name to a *Trichocereus huanucoensis* specimen distributed by the nursery The Succulent Source.
No specific cultivation requirements were detailed in the community discussion. Standard *Trichocereus* care is recommended: utilize a highly gritty, well-draining soil mix (50% inorganic material such as pumice or perlite), water deeply only when the substrate has dried out completely, and provide bright, filtered sunlight to partial direct sun depending on regional intensity.