B+

B+ – 10ML Syringe

Psilocybe cubensis | Versatile Beginner-Friendly Classic

Potency: Mild
Tanasi Potency Scale:
Mild: 0.1%–1.1%
High: 1.2%–2.0%
Extreme: 2.1%–3.0%

Origin & Genetic Lineage
B+ is one of the most recognized and widely cultivated Psilocybe cubensis strains in the world. It is typically credited to a cultivator known as Mr. G, who introduced it from Florida in the early 1990s. The name “B+” likely reflects its reputation for performing “above average,” with exceptional yields, ease of cultivation, and environmental adaptability. This is not a hybrid or cross, but rather a stabilized isolation believed to descend from wild Florida cubensis stock.

History & Community Spread
Since its debut, B+ has become a cornerstone in the mycology community, especially for beginners. Its ability to tolerate a range of environments, bounce back from error, and deliver beautiful flushes made it one of the most recommended strains in spore forums and grow guides for over 30 years. B+ consistently outperforms in inconsistent conditions and remains one of the most traded and preserved lines in the world.

Appearance & Morphology
This strain typically produces medium to large caramel or golden-brown caps that start convex and often flatten as they mature. Under ideal conditions, some caps can reach very large sizes. The stems are tall, straight, and white with moderate bruising. While some stems can be hollow, most retain a solid core with thick flesh. Spore color is dark purple-brown, consistent with standard cubensis.

Potency & Effects
B+ is generally considered to be in the Mild potency range on the Tanasi Potency Scale. While some larger fruits may lean into moderate potency, the average experience is known for its smooth onset, gentle visuals, and clear emotional uplift. Commonly described as mellow and easygoing, B+ is popular for first journeys, casual exploration, or low-anxiety microdosing. Its reputation as a safe and accessible strain has made it a long-standing community favorite.

Cultivation Notes
B+ is known for fast and dependable colonization across all common substrates, including brown rice flour cakes, rye grain, millet, and CVG. It performs well in both cooler and warmer temperatures, making it highly adaptable to a range of grow environments. Yields are impressive across multiple flushes, and its natural resistance to contamination adds to its reputation as one of the most “forgiving” cubensis strains available.

Genetics & Materials
Genetics preserved by: Tanasi Gardens
Grain and substrate supplied by: Sacred Three Mushrooms
Testing (if applicable): Altitude Consulting