Creamfields festivals & Magic Mushrooms: A Guide to Psilocybin

Major Psilocybin Mushroom Species

While more than 200 mushroom species contain psilocybin, a handful of them are commonly used for research and recreational use. These species vary in potency, habitat, appearance, and cultural significance. Below are the most well-known.

Psilocybe cubensis (“Gold Caps”)

Potency: Moderate (0.5-1% psilocybin)
Habitat: Subtropical/tropical regions, grows on herbivore dung
P. cubensis is the best-known psychedelic mushroom in the world because it’s relatively easy to cultivate indoors. It has a golden-brown cap, a thick stem, and bruises blue when handled. Dozens of cultivated strains exist, but these are all genetic variants of the same species. Some strains, like Penis Envy and Enigma, have been selectively bred for higher potency. Because it’s consistent and accessible, P. cubensis is the species most often used in research, therapeutic, and recreational / naturalistic contexts. 

Psilocybe semilanceata (“Liberty Cap”) 

Potency: High (1-2% psilocybin)
Habitat: Acidic grasslands, especially where sheep or cattle graze
This small mushroom is native to temperate regions across Europe and North America. It has a distinctive conical shape with a pointed tip. Despite its size, it is among the more naturally potent species. Liberty caps have been used recreationally in Europe for decades and remain one of the most commonly foraged psychedelic mushrooms in the world.

Psilocybe azurescens (“Flying Saucer”)

Potency: Very high (up to 2% psilocybin + psilocin)
Habitat: Coastal wood debris in the Pacific Northwest
Known as the “flying saucer mushroom,” P. azurescens produces large caramel-colored caps with wavy edges. First formally described in the 1990s, it naturally occurs in only a few coastal areas but is famous for its intense effects. Its combination of high psilocybin and psilocin content makes it one of the most potent species known.

Psilocybe cyanescens (“Wavy Cap”)

Potency: High (0.8-1.8% psilocybin)
Habitat: Wood chips, mulched garden beds, landscaping
P. cyanescens, or “wavy caps,” thrive in urban and suburban environments where wood mulch is used. They are commonly found in the Pacific Northwest, parts of Europe, and even city parks.

Psilocybe niveotropicalis

Potency: High (1.4-2.0% alkaloids)
Habitat: Wood mulch beds in Florida. This species appears to have a preference for human-engineered landscapes rather than wilder habitats. P. niveotropicalis is a species of warm weather wood-loving Psilocybe discovered in 2019 in southern Florida, known for its resilience, potency, large fruit bodies, and bountiful flushes. A promising species for outdoor cultivation in warmer regions.

Psilocybe ochraceocentrata

Potency: Medium-High (0.6 to 1.81% total alkaloids)
Habitat: A dung-loving species like P. cubensis, associated with Miombo woodland and mixed deciduous woodland, on granitic sand; recorded from Zimbabwe and South Africa. P. ochraceocentrata was previously, mistakenly referred to as P. natalensis (which remains its own separate species) before being distinguished and applied its current provisional species name. It is the closest living relative of the commonly cultivated P. cubensis, and considered around as easy to grow (although it may appreciate a little more fresh air exchange during fruiting). This mushroom has been making waves among the cultivator community as many prefer the experience it provides over that of P. cubensis, reporting less body load issues on ingesting it.

Psilocybe ingeli

Potency: Very High (2.3-4.2% total alkaloids).
Habitat: Manure enriched grassland pasture in South Africa.
Only scientifically described in 2023, this South African native is among the most potent Psilocybe mushrooms known. It is a member of Section Zapotecorum that requires high levels of humidity and fresh air during fruiting.

Psilocybe zapotecorum

Potency: Very High (2.25-4.17% PCBE / psilocybin equivalency)
Habitat: P. zapotecorum is widely distributed in the Neotropics, having been found in Guatemala, El Salvador, Nicaragua, Colombia, Chile, Brazil, Ecuador, Argentina, Venezuela, and Peru, in addition to Mexico. The mushrooms prefer moist habitats, having been found in ravines and near streams, rivers and waterfalls in mesophytic forests, oak-and-pine forests, or cloud forests between 900 and 3,200 m elevation, as well as in subtropical forests closer to sea level. P. zapotecorum, referred to as a “derrumbe” or landslide mushroom by the Mazatec, and badao zoo (“drunken mushroom”) by the Zapotec Indians. One of the most shamanically revered species used by Indigenous groups in Mexico such as the Mazatec, Zapotec and Mixtec, and held in very high regard by Western psilonauts. A slow fruiting species, which requires stable fruiting conditions with high humidity and fresh air levels, although cultivators consider it worth the wait.

Psilocybe subtropicalis

Potency: High-Very High (0.85- 4.85% PCBE / psilocybin equivalency).
Habitat: Coffee plantations, associated with clay soils, and also observed growing in open places of subtropical forests. Reported from Central and South America, including Mexico, Guatemala, Costa Rica, and Argentina, where it is reported growing at 1,000-1,800 meters in altitude. P. subtropicalis was previously referred to as P. semperviva, with this translating to “ever-living” in reference to its tenacious and long-lived nature. A slow fruiter, it can nonetheless potentially yield many flushes of potent mushrooms over an extended timeframe. A species held in high shamanic regard by the Mixetec and Zapotec Indigenous groups in Mexico. One standout feature of P. subtropicalis is that it produces highly potent mycelium.

Psilocybe Mexicana & Psilocybe Tampanensis (“Little Birds” & “Philosopher’s Stone)

Potency: Moderate (0.3-0.7% psilocybin)
Habitat: Mexico, Central America, and the southeastern U.S.
These species are notable for producing sclerotia, the underground nutrient storage units, also called “truffles”, which house the same psilocybin as is found in the mushrooms. Truffles are legal in certain countries (like the Netherlands) even when mushroom fruiting bodies are not, making them more accessible in some settings.

Panaeolus cyanescens (“Blue Meanies”)

Potency: High-Very High (2.5-4.05% psilocybin).
Habitat: A dung-loving species found across subtropical and tropical zones of the planet. It is notable for the speed of its growth (requiring high humidity and fresh air exchange during fruiting), and it is favoured by some psilonauts for the experience it provides. One strain of this species ‘TTBVI’ (Tamarind Tree British Virgin Islands) holds the current record for most potent magic mushroom in the world, having won several consecutive cultivar cups.

Psilocybe caerulescens

Potency: Medium-High (0.8-2.46% PCBE / psilocybin equivalency).
Habitat: Often fruits in disturbed clay-rich soils with woody debris often devoid of herbaceous plants (often found near rivers, streams, and ravines), with a tendency to fruit in large groups. A species held in high regard by numerous Mexican Indigenous groups and Western psilonauts alike. It is the species through which Timothy Leary and R. Gordon Wasson were both introduced to psilocybin.

Other Factors to Consider When Taking Mushrooms

It’s essential to understand how other factors, aside from the type of mushrooms, can impact the safety and quality of a trip. Potency (the percentage of psilocybin in the mushroom relative to its weight), the growing conditions, set, setting, and the legality.

At a Glance: Potency Hierarchy

You’ve got to know—or, at least, take mushrooms with someone who knows—how much psilocybin different species contain. For example, P. azurescens can contain nearly four times more psilocybin than P. cubensis, which means if you take the same dose of those two different species, you’re looking at two very different feeling trips.

• Very High: Psilocybe azurescens, Panaeolus cyanescens, P. ingeli, P. zapotecorum
• High: Psilocybe semilanceata (liberty caps), Psilocybe cyanescens 
• Moderate: Psilocybe cubensis, Psilocybe mexicana, Psilocybe tampanensis (truffles)

Note that potency can vary within species as well.

What Influences Potency Beyond Species?

Even within the same species, strength can vary significantly due to:

• Growing conditions: Temperature, humidity, and substrate can influence the production of alkaloids.
• Maturity at harvest: Younger mushrooms may have a higher concentration by weight, but larger mushrooms contain more total psilocybin.
• Genetics: Different strains or isolated cultures within a species can vary.
• Storage and preparation: Heat, light, moisture, and oxygen degrade psilocybin over time. Well-dried and properly stored mushrooms are more potent.

The species of a mushroom is a strong indicator of potency, but it’s not the only factor. Identifying the mushroom and understanding where it came from is critical for safe and accurate dosing.

Do Different Species Feel Different?

Not really. All psilocybin mushrooms elicit the same core effects: Altered perception and visuals, emotional shifts, an altered sense of time, and the ability to look inward. Some people say specific species can feel more “visual” or “body heavy”—anecdotal claims that are hard to verify scientifically. 

In addition to psilocybin/psilocybin, there are a range of other compounds found in these fungi. These include tryptamines such as biocytin, norbaeocystin, nor psilocin and aerogenesis, a number of beta-carbolines (in trace amounts) and a range of terpenes. While the jury is still out on the possible modulating influence of these other secondary compounds in these fungi, our understanding of the pharmacology of these compounds is limited.

REFERENCE

Types of Psychedelic Mushrooms: A Complete Guide to Psilocybin Species Around the World