Strain Highlight: Mckennaii

Strain Highlight: Psilocybe cubensis 'McKennaii'

The Psilocybe cubensis 'McKennaii' strain, a tribute to the famed ethnobotanist and psychonaut Terence McKenna, is a potent variety of the psilocybin-containing fungi. It's known for its unique characteristics and strong psychedelic effects, making it popular among cultivators and psychonauts alike.

History and Origins

The 'McKennaii' strain is named in honor of Terence McKenna, an influential author, speaker, and advocate for the responsible use of naturally occurring psychedelic substances. Although the precise origins of this strain are somewhat shrouded in mystery, it was likely named in homage to McKenna due to its notably potent effects.

Physical Characteristics

McKennaii mushrooms often produce smaller to medium-sized fruiting bodies but make up for their size with their potency. They typically display a unique cap shape, which is often described as irregular and highly wavy or twisted. The color of the cap can vary from a lighter tan in younger specimens to a dark caramel or brown in mature mushrooms.

The gills under the cap are initially a light gray and darken to a purplish-black hue as the mushroom matures and the spores develop. This dark purplish-black color is also reflected in the spore print of the McKennaii strain.

Stems of the McKennaii mushrooms are usually sturdy and can display a range of colors from white to light yellow. As is typical of psilocybin mushrooms, they exhibit a bluish bruising reaction when damaged.


McKennaii is praised for its robust mycelial growth, often colonizing substrates efficiently and exhibiting a rhizomorphic mycelium. It readily colonizes a variety of substrates, including grain, manure, straw, and coir-based mixtures. Despite the generally smaller size of the fruiting bodies, McKennaii is known to yield plentiful flushes.


The McKennaii strain is celebrated for its strong psychedelic effects. The primary active compounds in Psilocybe cubensis, including McKennaii, are psilocybin and psilocin. These compounds can induce a range of effects, including deep emotional introspection, visual and auditory hallucinations, shifts in the perception of time, and occasionally spiritual experiences.

Users often report that the McKennaii strain offers a potent, well-rounded psychedelic experience, characterized by a heightened sense of creativity, a feeling of universal connection, and profound introspective insights.


The typical dosage for dried McKennaii mushrooms ranges from 1-2.5 grams for beginners, 2.5-5 grams for intermediate users, and 5 grams or more for those with more experience with psilocybin. As always, it's advisable to start with a lower dose and increase gradually in subsequent experiences to account for individual sensitivity and comfort level.

Final Thoughts

Psilocybe cubensis 'McKennaii' is a powerful strain within the Psilocybe family, recognized for its unique physical traits, potent effects, and robust growth characteristics. While its fruiting bodies may be smaller, its powerful effects and abundant yields make it an appealing choice for cultivators and psychonauts alike.

It's crucial to note that cultivation and possession of Psilocybe cubensis, including the McKennaii strain, may be illegal in some regions. Always familiarize yourself with local laws before cultivating or consuming these mushrooms. When planning a psychedelic journey, consider your set (mindset) and setting (environment), and always prioritize safety and respect for these potent substances.
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