Psilocybe “Azurescens” Monotub: A Guide to Indoor Cultivation


Psilocybe azurescens is a species of hallucinogenic mushroom known for its high potency and unique characteristics. Native to certain regions in the Pacific Northwest of the United States, it has gained popularity among enthusiasts for its intense psychedelic effects. While growing Psilocybe azurescens is traditionally best suited for outdoor cultivation, some individuals have experimented with indoor growing techniques, such as using a monotub. In this article, we will explore the possibilities and challenges of growing P. azurescens in a monotub.

Understanding Psilocybe Azurescens

Psilocybe azurescens is considered one of the most potent species of psilocybin-containing mushrooms. It contains high levels of psilocybin and psilocin, the psychoactive compounds responsible for its hallucinogenic effects. These mushrooms have a unique bluish coloring on their caps and stems, hence the name “azurescens.”

Natural Habitat and Environmental Requirements

In its natural habitat, P. azurescens thrives in coastal areas, specifically on wood chips and mulch in close proximity to deciduous trees like alder and eucalyptus. The mushrooms require specific environmental conditions, such as cool temperatures (around 50-60°F), high humidity, and indirect sunlight. They are typically found growing in late fall or early winter.

Challenges of Indoor Cultivation

Growing P. azurescens indoors presents several challenges. One of the key difficulties is replicating the exact environmental conditions necessary for the mushroom’s growth. It can be challenging to maintain the required low temperatures and high humidity levels indoors. Additionally, the process of colonizing substrate and inducing fruiting can be more complex compared to other psilocybin mushroom species.

Monotub Cultivation Approach

The monotub cultivation technique has gained popularity among indoor mushroom growers due to its simplicity and effectiveness. A monotub is a sealed, plastic container that provides an ideal environment for mushroom growth. While Psilocybe azurescens is not typically grown in a monotub, some growers have attempted this method with varying degrees of success.

Here are the basic steps to attempt growing P. azurescens in a monotub:

1. Substrate Selection: As P. azurescens is a wood-loving species, a substrate consisting of hardwood chips or sawdust mixed with other ingredients like wheat bran or rice flour can be used. Ensure the substrate is well-pasteurized or sterilized to prevent contamination.

2. Inoculation: Inoculate the substrate with P. azurescens spawn or mycelium. This can be obtained from a reputable supplier or by making your own liquid culture or agar plates.

3. Colonization: Place the inoculated substrate in a clean and sterile environment with low light. Maintain the temperature around 70-75°F and ensure proper air circulation.

4. Fruiting Conditions: Once the substrate is fully colonized with mycelium, initiate the fruiting process by exposing the monotub to lower temperatures (around 50-60°F) and increasing humidity levels (80-90%). Indirect light can be provided, but direct sunlight should be avoided.

5. Harvesting: After several weeks, small pinheads will emerge, which will eventually develop into mature mushrooms. Harvest them when the caps have opened fully but before the veil underneath breaks.


Although growing Psilocybe azurescens in a monotub presents challenges, it is not impossible. However, it requires careful attention to environmental conditions, substrate preparation, and a deep understanding of the species’ specific requirements. As with any mushroom cultivation endeavor, it is crucial to conduct thorough research, seek advice from experienced growers, and exercise caution throughout the process. With the right knowledge and dedication, cultivating P. azurescens can be a rewarding and potentially transformative experience for enthusiasts.