Jack Frost
About Jack Frost
Strength: Intermediate — moderately above baseline cubensis. Roughly 1.2–1.5× Golden Teacher.
Dosing: Microdose 75–100 mg. Light 0.75–1.25g. Moderate 1.5–2.0g. Full 2.0–3.0g.
Onset: 30–45 minutes after eating.
Duration: 4–6 hours total. Peak around 90 minutes.
Jack Frost is a leucistic-leaning Psilocybe cubensis strain with pale fruit bodies and cool-toned visual character. The specific breeder and parent cross are not formally documented in public sources. Some community testing has suggested moderately elevated potency for Jack Frost, though the specific data is not formally cataloged.
Fruits are medium-sized with pale ivory-to-cream caps and stems that lack standard cubensis caramel pigmentation. Cap shape is rounded with mild umbo. Bruising is moderate blue under handling. Growth is reliable with moderate yields.
The experience profile is clean with cool visual character. Onset is standard (30–45 minutes), peak around 90 minutes, total duration 4–5 hours. Visuals are vivid with a cool color palette — closed-eye patterns tend toward blue, white, and silver tones rather than warm colors. The headspace stays articulate; body load is moderate. Intermediate in our system.
Because of the high potency, Jack Frost is classified Intermediate in our system. For most experienced users, 2.0–2.5g produces a full experience. Microdose protocols use 75–100 mg every 3–4 days, slightly below the standard 100 mg cubensis baseline. First-time users should drop to the lower end of the dose range.
At Mush-Room we stock Jack Frost dried mushrooms in multiple sizes when available. In-store pickup only (no shipping) at Mush-Room, 2748 Jackson Ave, Ann Arbor or Myco & Co at 5540 E. 8 Mile Rd, Detroit, MI 48234, open daily 10AM–8PM. Adults 21+ with valid government-issued photo ID. Operating under Ann Arbor Resolution R-20-370.
Jack Frost — Quick Facts
| Experience Level | Intermediate |
| Potency | High |
| Species | Psilocybe cubensis |
| Format | Dried whole mushrooms |
| Sizes Available | 1/8 oz (3.5g) - $35, 1 oz (28g) - $225 |
| Availability | ✓ In stock — ready for pickup |
| Pickup Location | Mush-Room: 2748 Jackson Ave, Ann Arbor, MI 48103 Myco & Co: 5540 E. 8 Mile Rd, Detroit, MI 48234 |
Dosage Guide for Jack Frost
The following guidelines apply to Jack Frost and most dried Psilocybe cubensis varieties. Always start lower than you think you need, especially with a strain you have not tried before.
→ View full dosage reference chart in our Strain Guide.
Where to Buy Jack Frost
Jack Frost is available for in-store pickup only (no shipping) from Mush-Room, an Ann Arbor psilocybin shop, or Myco & Co, its Detroit sister store. We are located at 2748 Jackson Ave, Ann Arbor, MI 48103 and 5540 E. 8 Mile Rd, Detroit, MI 48234, and both are open daily 10AM–8PM. No appointment needed, walk-ins welcome.
In-store pickup only - we do not ship. Adults 21+ with valid ID. Browse all dried mushroom strains →
Jack Frost is currently in stock.
About Psilocybin Mushrooms
Psilocybin mushrooms — commonly called magic mushrooms — contain the psychoactive compounds psilocybin and psilocin. Researchers at institutions such as Johns Hopkins Center for Psychedelic and Consciousness Research have studied their effects in supervised research settings.
Responsible use involves thoughtful set and setting, starting with appropriate dosing, and ideally having a trusted person present. Our staff are always available to answer questions about any strain we carry, including Jack Frost.
→ Explore our full Strain Guide for potency ratings, experience levels, and effect profiles on all strains we carry.
Jack Frost - Frequently Asked Questions
Why is it called Jack Frost?
The name references the strain's pale leucistic appearance and the cool color palette in the visual experience — closed-eye patterns tend toward blue, white, and silver tones. The naming is both morphological and experiential.
How potent is Jack Frost?
Jack Frost sits in the High potency band — Intermediate in our system. Comparable to other balanced Intermediate strains. A 2.0–2.5g dose produces a full experience for most users.
Is Jack Frost actually albino?
No — like other leucistic cubensis strains, Jack Frost expresses reduced melanin pigmentation rather than true albinism. The pale appearance is genetic but the strain otherwise behaves like standard cubensis.
What dose of Jack Frost should I take?
For most users, 2.0–2.5g produces a full experience. Microdose protocols use 75–100 mg every 3–4 days. First-time users should drop to 1.5–2.0g.
Where can I buy Jack Frost mushrooms in Ann Arbor?
Mush-Room carries Jack Frost at our Ann Arbor location, 2748 Jackson Ave, and at our sister store, Myco & Co, 5540 E. 8 Mile Rd, Detroit. In-store pickup only - we do not ship. Open daily 10AM–8PM. Adults 21+ with valid ID. Operating under Ann Arbor Resolution R-20-370.
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Adults 21+ only · In-store pickup only - no shipping · Mush-Room, 2748 Jackson Ave, Ann Arbor, MI, and Myco & Co, 5540 E. 8 Mile Rd, Detroit, MI · Psilocybe cubensis
Getting the Most from Jack Frost: Dosing, Prep, and Storage
How to weigh and portion accurately
Dried mushroom potency varies within a single flush — caps are typically 20–40% more potent per gram than stems, and smaller mushrooms tend to test higher than larger ones. To eliminate that variance and get a consistent session dose from Jack Frost, grind your entire eighth into a homogenous powder before weighing out your session dose. A coffee grinder works fine; a mortar and pestle is quieter and preserves the aroma.
Use a scale with 0.01g precision (0.05g minimum). Kitchen scales that measure to the nearest gram will not give you accurate psilocybin doses. If you're microdosing, you need 0.01g resolution or the variance between "microdose" and "threshold dose" will drift session to session.
Set and setting: the two variables that shape every trip
"Set" is your mindset going in — are you calm, curious, well-slept, and free of acute stress? "Setting" is your physical environment — is it comfortable, private, safe, and free of interruptions? These two variables have as much influence on a psilocybin session as the dose itself. Do not dose Jack Frost the day of a major work deadline, in an unfamiliar environment, or if you're actively arguing with someone.
Recommended baseline: Familiar space, comfortable clothes, water, snacks that don't require prep, a curated playlist or nothing (silence is fine), no obligations for the next 8 hours, a trusted sitter if this is a new strain or a high dose. Phone on Do Not Disturb.
Onset, peak, and duration — a session timeline
Most Psilocybe cubensis strains including Jack Frost follow this timeline when eaten dried on an empty stomach:
- 0–45 minutes: Come-up. Body warmth, first perceptual shifts, mild yawning or nausea. Some strains onset in 20–30 minutes (Melmac PE lineage, albinos). Others take 60–90 minutes.
- 45 minutes–2 hours: Peak. Full visual enhancement, deepest introspection, warmest body sensations.
- 2–5 hours: Plateau. Effects gradually taper. Music, art, and conversation feel richest here.
- 5–8 hours: Come-down. Perceptual effects fade, residual afterglow (warmth, mental clarity, mood lift) can last into the next day.
Tolerance and how to manage it
Psilocybin tolerance builds fast and resets slow. A full dose today will feel roughly 50% weaker if repeated tomorrow, 75% weaker at day 3, and back to baseline around day 7–14. Cross-tolerance with LSD and other classical psychedelics is significant. If you're doing back-to-back sessions, expect diminishing returns and don't chase the first-day intensity by stacking doses.
For microdosing protocols, this is why the Fadiman schedule (1 day on, 2 days off) and Stamets Stack (5 days on, 2 days off) exist — both are designed to avoid tolerance buildup.
Storage and shelf life
Dried magic mushrooms including Jack Frost stay potent for 1–2 years stored properly — airtight glass jar, room temperature, out of direct sunlight, away from moisture. A silica gel packet in the jar helps maintain the crispy "cracker-dry" texture. Do not refrigerate (introduces moisture) or freeze (degrades the cell structure and alkaloids). Psilocybin slowly converts to less-active byproducts over time; a well-stored jar at year 2 will be roughly 15–25% weaker than fresh.
Edibles (chocolates, gummies, drinks) have shorter shelf lives — check the manufacturer's date on the package. Most are stable 6–12 months when kept cool and dry.
When to seek support
If a session becomes overwhelming, remember: you took a substance, it will pass, and you are safe. Change your environment (go outside, dim lights, put on quiet music), focus on breath, and ride it out with your sitter. Psilocybin has an exceptional safety profile physiologically; the risks are psychological (anxiety, panic, difficult introspective content) and almost always resolve as the substance metabolizes.
For emergency mental health support at any time: 988 Suicide and Crisis Lifeline. For local Ann Arbor harm-reduction guidance: SAMHSA National Helpline 1-800-662-4357.
Where to buy Jack Frost
Mush-Room, 2748 Jackson Ave, Ann Arbor, MI 48103, and Myco & Co, 5540 E. 8 Mile Rd, Detroit, MI 48234. In-store pickup only, 21+ ID required, open daily 10 AM to 8 PM. No shipping, delivery, or mail order under any circumstances. Check the live product listing linked from this strain guide to confirm current stock and pricing.
Related resources:Full Magic Mushroom Strain Guide · Shop All Dried Strains · Mushroom Capsules · Myco & Co and Mush-Room Rewards