Rootbeer Float (Psilocybe cubensis)
Rootbeer Float (Psilocybe cubensis)
Visual Identification

What is Rootbeer Float? A Complete Overview
The Rootbeer Float strain is a visually captivating and potent variety of the Psilocybe cubensis species known for its distinctive coloring and powerful psychedelic effects. This strain derives its name from its unique coloration—a blend of deep brown and light caramel tones, often coupled with creamy white striping and a subtle frosty texture that resembles a foamy root beer float. The caps typically measure medium to large in size with a convex to plane shape and can display mild bruising, often blue, when physically disturbed. Both mushroom grow kits and monotub or dubtub setups produce impressive yields reliably.
Rootbeer Float mushrooms are often prized for their high psilocybin concentrations and consistent fruiting patterns. The stems are thick, fibrous, and generally cream-colored with brown streaking along the base, contributing to their robust appearance. The gills range from light tan to dark purple as spores mature, creating striking contrast underneath the cap.
This hybrid strain is favored among psychonauts and cultivators for its visual aesthetic, reliability, and balanced experience. Rootbeer Float is a relatively new designer strain in the cultivation world, believed to originate from intentional hybridization involving Penis Envy and another visually rich cubensis variant. Its appeal lies in its balance between intense visuals, introspective depth, and a grounded emotional afterglow, making it suitable for therapeutic and recreational sessions alike.
Taxonomic Classification
Origin and Cultural Significance of Rootbeer Float
Rootbeer Float is a recent innovation in the lineage of cultivated psilocybin mushrooms, a reflection of the modern mycology movement's fascination with hybridization and aesthetic refinement. Unlike indigenous strains such as Psilocybe mexicana or Psilocybe zapotecorum, which have roots in ancient Mesoamerican rituals and were traditionally used by Aztec, Zapotec, and Mazatec shamans, the Rootbeer Float strain emerged from laboratory crossings rather than wild discovery.
The cultural significance of Rootbeer Float lies in its development within the broader evolution of underground psychedelic therapeutics and the resurgence of citizen mycology. Rootbeer Float represents a generational shift—where contemporary psychonauts and amateur cultivators explore not only entheogenic experiences but also experimentation in cultivation aesthetics, strain stabilization, and optimization of the psilocybin experience.
Within online mushroom communities, Rootbeer Float has quickly gained recognition for its balanced high and consistency, aligning with a cultural trend prioritizing mind-body integration, recreational spiritualism, and reliable therapeutic functions. While it holds no known use in traditional rituals, it has woven itself into the modern psychoactive narrative—a symbol of the transition from ancient ethnobotany to bioengineered entheogenics. This makes it a fully postmodern strain with cultural roots in internet-born collectivism and DIY psychedelic science.
How to Cultivate Rootbeer Float
Difficulty Level: Intermediate - more demanding than classic cubensis due to Penis Envy lineage requiring robust sterile technique.
Substrate Requirements:
- Sterilized milo grain bags for superior nutrition and faster colonization
- CVG substrate (Coco Coir, Vermiculite, and Gypsum) - clean, scent-free, contamination-resistant
- Manure-based substrate (traditional option)
- All-in-one grow kits (ideal for beginners and contamination reduction)
Environmental Conditions:
- Colonization Temperature: 75°F to 78°F (24°C–26°C)
- Fruiting Temperature: 70°F to 75°F (21°C–24°C)
- Humidity: 90%–95% consistently required
- Air Exchange: Adequate oxygen exchange in monotub or fruiting chamber
- Lighting: Indirect natural light
Timeline:
- Colonization: 2–3 weeks under optimal conditions
- Pinning to maturity: 7–10 days after initial pins develop
- Multiple flushes possible with proper care
Important Note: Rootbeer Float responds well to high-quality liquid culture or spore syringe inoculation. Maintain strict sterile technique throughout the process. The strain's Penis Envy genetics make it more sensitive than typical cubensis, but yields are rewarding with proper attention to environmental conditions.
Where Do Rootbeer Float Mushrooms Grow?
Rootbeer Float mushrooms are not known to occur naturally in the wild due to their designer status as a hybrid strain. However, since it is based on Psilocybe cubensis genetics, its habitat preferences align with its progenitors in cultivated settings. Naturally occurring Psilocybe cubensis strains are tropical-subtropical mushrooms that thrive in humid, nutrient-rich environments with steady temperatures.
In their natural habitat, cubensis strains are typically found growing in cow pastures and other animal-grazed fields, where their primary substrate—herbivore dung—is abundant. These mushrooms prefer open lowland areas, often in grasslands near forests, but not within dense shaded canopies. Rootbeer Float mimics these growth tendencies in artificial environments.
Key environmental conditions for cultivation include:
- Temperature: Colonization at 75°F–78°F, fruiting at 70°F–75°F
- Humidity levels of 90–95% during fruiting
- Climate-controlled spaces with regulated air exchange
- HEPA-filter inputs to avoid contamination
- Altitudes from sea level up to 1,500 meters in warm locations
In cultivated settings, Rootbeer Float requires careful environmental simulation that includes maintaining elevated humidity, ambient air exchange, and indirect but ample lighting. The colonization mimics the warm, dense conditions in moist soil, while fruiting emulates the humid dawn and dusk periods of equatorial zones.
When are Rootbeer Float Mushrooms in Season?
Year-round (in controlled environments); naturally: Spring to early Autumn (April–October)
Are Rootbeer Float Mushrooms Edible or Toxic?
Toxicity Information:
Rootbeer Float is considered nontoxic when used in appropriate psychedelic doses, usually between 1–3 grams of dried mushroom material. However, like all psilocybin mushrooms, it can cause physiological and psychological distress when consumed in high doses or outside of a safe, controlled environment.
Physical Risks:
- Common side effects include nausea, dizziness, sweating, anxiety, pupil dilation, and temporary increase in heart rate
- Visual distortions and emotional fluctuations are expected
- Risk of misidentification if purchasing from unreliable sources
- Potential for "bad trip" with overdosing - intense paranoia, dissociation, or panic
Risk of Misidentification:
Although Rootbeer Float is cultivated and not wild-harvested, improper labeling or visual similarity to harmful fungi like Galerina marginata can pose serious dangers. There are no lethal compounds in Rootbeer Float itself, but set, setting, and dosage are the primary safety factors.
Mixing with alcohol or stimulant substances increases toxicity risks. Always verify source and begin with lower doses to assess individual sensitivity.
What are the Medicinal Uses for Rootbeer Float?
Despite its recent development as a strain, Rootbeer Float shares the psilocybin-rich profile of other Psilocybe cubensis mushrooms and presents promising properties for mental health benefits. Scientific inquiry into psilocybin's medicinal properties suggests wide-ranging applications in depression, anxiety, PTSD, addiction, and end-of-life psychological distress. While Rootbeer Float hasn't itself been the subject of clinical trials, its high psilocybin concentration implies therapeutic potential that mirrors or even surpasses traditional strains.
Potential Benefits:
- Mental Health Applications: Early anecdotal reports suggest users experience fewer stress reactivities, improved emotional cognition, and cathartic psychological processing
- Neuroplasticity Enhancement: The psilocin content may contribute to reduced systemic inflammation and improvements in neuroplasticity
- Therapeutic Experience: Unique hybridization may produce a smoother, less fragmented trip experience compared with purely Penis Envy strains
- Emotional Processing: Psychedelic therapists theorize that emotional openness allows for sustained behavior change and neurological rewiring
The balance between intense visuals, introspective depth, and grounded emotional afterglow makes Rootbeer Float potentially suitable for therapeutic and recreational sessions alike. These speculations point to its value as a tool in the future of psychedelic-assisted therapy, though formal validation through clinical studies is still needed.
Important: Medical applications are still under study. For now its use remains mainly within underground and citizen science circles until formal validation is achieved through clinical research.
What Drugs Interact with Rootbeer Float?
Interactions with Prescription Medications:
- MAO Inhibitors (MAOIs): MAO inhibitors like harmaline can potentiate psilocybin's effects drastically, leading to unexpectedly intense experiences that may last longer or be psychologically overwhelming
- SSRI Antidepressants: May either dull the psychedelic experience or, in high-dose combinations, increase the risk of serotonin syndrome, a potentially life-threatening condition
- Antipsychotics: Can lead to unstable mood responses or physical effects such as heart palpitations, dizziness, or strong nausea
Other Substances:
- Benzodiazepines: Can lead to unstable mood responses or physical effects
- Alcohol: Can lead to unstable mood responses and emotional unpredictability
- Stimulants: May cause heart palpitations, dizziness, or strong nausea
- Adaptogens: Some users explore microdosing alongside Rhodiola or Lion's Mane mushrooms for potential cognitive enhancement, though scientific consensus is lacking
Important: Medical conditions involving heart rhythm, epilepsy, or schizophrenia may be exacerbated by psilocybin. Using Rootbeer Float in conjunction with any pharmaceutical or herbal compound should be approached with caution and ideally under medical supervision where possible.
What Mushrooms Look Like Rootbeer Float?
Although Rootbeer Float is a designer strain typically grown under controlled conditions, some features may resemble those of both edible and toxic wild mushrooms, creating the potential for misidentification:
- Psilocybe cyanescens (Wavy Caps): More potent but generally grow crescent-shaped wavy caps and are found outdoors
- Galerina marginata: DEADLY POISONOUS. Small brown cap, sometimes mistaken for young cubensis mushrooms. Deposits rusty-colored spores and has a fragile stipe
- Conocybe filaris: Contains the same deadly toxins as Amanita. Though smaller and more delicate, visual confusion can occur in novice hands
- Panaeolus cinctulus: A known psychoactive mushroom with a tannish cap and dark gills. Different bruising patterns and tends to be found wild in grassy fields
- Agaricus species: Common edible mushrooms often have similar cap structures when young but lack blue bruising and grow under differing ecological circumstances
Safety Note: Because of the danger posed by toxic mimics, those interested in cultivation should avoid sampling mushrooms based solely on appearance. Spores should only be purchased from reputable sources and grown in accurately labeled, indoor settings to eliminate risks of misidentification.
Disclaimer: This information is for educational, taxonomy, and research purposes only. Always consult a trained professional before attempting to identify any mushroom. Always consult a trained healthcare professional before attempting to ingest any mushroom. Do not message asking if we sell cultures or spores, all requests will be ignored. Always respect your local laws.