Home / Magic Mushroom Spores / Psilocybe Cubensis / Gulf Coast
Psilocybe cubensis
Gulf Coast
A wild-caught Gulf Coast cube with flying-saucer caps and a generous, dark spore drop. Named for the warm pasture country where Psilocybe cubensis genuinely grows feral.
★★★★★ 5.0 · 3 reviewsChoose your format
Some formats are out of stock
Want to know the moment it returns?
Sold for microscopy, taxonomy and collecting only. Not for cultivation.
filled under laminar flow
plain packaging, tracked
The short version
Gulf Coast is a Psilocybe cubensis line tied to the warm cattle country of the US Gulf, one of the few places this species genuinely grows feral. It throws big flat caps and long pale stems and drops a heavy, dark purple-brown print, which makes it an easy, satisfying study slide. The exact who-and-when of the collection is contested vendor lore, so treat the backstory as community history rather than fact.
Straight talk
Fact vs. legend
There is a lot of folklore around this strain. Here is which bits are real, side by side.
What we actually know
- It is a plain Psilocybe cubensis, not a hybrid or a separate species, and not an albino or leucistic line.
- Psilocybe cubensis genuinely grows wild across the US Gulf Coast states (Texas through Florida), fruiting on cattle and horse dung in pasture for much of the year, so a feral Gulf Coast collection is entirely plausible.
- Like the species generally, it drops a heavy, dark purple-brown to near-black spore print, which is exactly what makes it a rewarding collector's slide.
- Mature fruitbodies are described consistently as large, with broad flattened caps and long pale stems.
What the community says
- The story most often repeated is that it was a wild find somewhere on the Gulf Coast, but the details vary wildly by who is telling it: a hunt just west of Tampa in Florida, an older Texas collection from the late 1980s, or a separate Texas Gulf line gathered south of Houston. None of it is documented.
- A collector remembered only as Mr. G is sometimes credited with popularising it, though that same name floats around the origin myths of several cubensis lines, so take the attribution with a pinch of salt.
- Vendors often bill it as unusually potent and prolific. A cube is a cube, and strain-to-strain strength claims like these are largely cultivation-driven and overstated.
- The name simply points at a region rather than a person or a lab, which is part of why so many slightly different lines all answer to it.
The story
The cube named after a coastline
Most famous cubes are named after a person, a colour or a joke. Gulf Coast is named after a place, and that turns out to be the clearest thing about it. Psilocybe cubensis really does grow wild along the warm, cattle-grazed lowlands of the American Gulf, from the pastures of south and east Texas across to Florida, where it fruits on cow and horse dung for much of the year. So unlike a lot of vendor names, a feral Gulf Coast collection is not just plausible, it fits the species' actual range.
The trouble starts when you ask which collection. By one account it was a wild hunt just west of Tampa, Florida. By another, most of the Gulf Coast material in circulation traces to an older gathering near Texas in the late 1980s. A third strand splits off a separate Texas Gulf line said to have been picked up south of Houston. These stories do not agree with each other, and none of them comes with a verifiable name or date attached.
The version is that Gulf Coast is less one pedigreed strain and more a regional label that several slightly different wild lines have all ended up wearing.
What is safe to say
Strip away the contested folklore and a clear picture remains: this is a robust, ordinary Psilocybe cubensis from a region where the species genuinely lives feral, it makes big saucer-capped fruitbodies, and it deposits a generous dark print. A collector remembered as Mr. G is sometimes credited with spreading it around, but that name turns up in more than one cube's origin tale, so treat it as lore. The geography is real. The paperwork, apparently, never existed.
The species
Meet Psilocybe cubensis
Gulf Coast is a collector’s line of a single, well-travelled species. Psilocybe cubensis was first written up in 1906 by the American mycologist Franklin Sumner Earle, from a specimen found in a cattle field in Cuba, which is where the name comes from. He originally called it Stropharia cubensis; Rolf Singer moved it into the genus Psilocybe in 1948.
The genus name is a tidy bit of Greek: psilos (“bare”) plus kubē (“head”), for the smooth, peelable skin of the cap, so the full name reads roughly as “the bare-headed mushroom from Cuba.”
- Family
- Hymenogastraceae (older books say Strophariaceae)
- Genus
- Psilocybe (Fr.) P. Kumm., 1871
- Species
- Psilocybe cubensis (Earle) Singer, 1948
- Basionym
- Stropharia cubensis Earle, 1906
- This product
- Gulf Coast, a collector’s cultivar of the species
- Type locality
- Cuba (where it was first named)
How you’d know it
Field marks
These describe the mature mushroom for reference and identification.
Flying-saucer cap
Mature caps are described as large and broad, opening from convex to flat and often wide enough to look like a saucer. Colour runs golden-brown to tan and beige, hygrophanous so it pales as it dries, frequently lighter toward the rim.
Long pale stipe
White to off-white and notably long and sturdy, sometimes faintly yellowish or a little contorted. A partial veil leaves a ring (annulus) on the upper stem, which usually ends up dusted dark with falling spores.
Gills that darken
Crowded and pale grey when young, deepening through to purple-black as the spores ripen. That dark gill face is what loads the heavy print this line is known for.
Blue bruising
Handle or damage the flesh and it bruises blue-green, the classic Psilocybe reaction as enzymes convert psilocybin to psilocin, which then oxidises to blue pigments. Standard for the species and a useful field mark.
Where it comes from
A dung-lover with a wanderer’s history
Psilocybe cubensis is coprophilic, a fancy word for dung-loving. In the wild it lives on the droppings of big grazing animals, classically cattle and water buffalo, fruiting from warm, humid pasture. It does not grow on wood and it does not partner with tree roots.
You’ll find it across the warm parts of the world: the Gulf Coast of the United States, Mexico, Central and South America, Southeast Asia and Australia. It was named from Cuba, but where the lineage truly began is an open question. A 2026 study describing its closest wild relative in southern Africa suggests the deep roots are Old-World, the mushroom having apparently travelled with grazing herds long before anyone gave it a Latin name.
The main event
Under the microscope
This is what you actually bought the spores for. Put a print or a drop from a syringe on a slide and here’s what shows up.
- Shape & size. Smooth, thick-walled and subellipsoid, like a slightly squashed rugby ball, roughly 11.5–17 µm long by 8–11 µm wide (the figures Paul Stamets settled on).
- The germ pore. Look for a single pale, flattened dot at one end. That’s the one thin spot in the wall where, in nature, a mushroom would begin, and a real cubensis hallmark.
- Pale alone, dark in a crowd. A single spore looks honey-amber with the light behind it; only in a mass do they read deep purple-brown to black. So a near-black print but pale spores on the slide is normal optics, not a dud.
- What you’ll need. Find the field at 100×, study shape and the germ pore at 400×, and get the wall crisp at 1000× under oil. A touch of methylene blue or KOH lifts the contrast.
- The legal bit, and why it’s true. A dormant spore carries no psilocybin or psilocin at all; that chemistry only appears later in living tissue. That is exactly why the spores are legal to own and study in the UK.
Choose your format
Print, syringe, vial or swab?
Same lab-grade genetics in every option. The honest difference is shelf life versus how soon you’re at the scope.
Spore print
Keeps longest
Spores dropped straight onto sterile foil. Stored cool and dry it outlasts everything else here, so it’s the one to reach for if you’re building a collection to keep for years.
Spore syringe
Ready tonight
Spores suspended in sterile water, ready to go straight onto a slide. The quickest way to be looking down the microscope this evening. Comes in 3 mL and 12 mL.
Vial & swab
Compact
A sealed glass vial is a tidy middle ground; a sterile swab is the most travel-friendly, robust little format for adding a strain to your reference set.
At a glance
The spec sheet
- Species
- Psilocybe cubensis
- Strain
- Gulf Coast (collector’s cultivar)
- Spore print
- Dark purple-brown to near-black, heavy depositor
- Spore shape
- Subellipsoid, smooth, thick-walled, with a germ pore
- Spore size
- ~11.5–17 × 8–11 µm
- Basidia
- Mostly 4-spored, ~20–30 × 7–10 µm
- Wild habitat
- Coprophilic, on herbivore dung & warm pasture
- Climate
- Subtropical to tropical
- Intended use
- Microscopy, research & collecting only
Dig deeper
Further reading
Independent, non-commercial sources, no shops, just good information.
- Psilocybe cubensis on Wikipedia: the species overview.
- The genus Psilocybe: taxonomy and the family reshuffle.
- Index Fungorum: the formal nomenclature record.
- Proc. Royal Society B (2026): the African wild-relative study.
Common questions
Frequently asked
Yes, for microscopy and study. A dormant spore contains no psilocybin or psilocin, so the spores themselves are not a controlled substance in the UK. We sell them strictly for microscopy, taxonomy and collecting, never for cultivation.
From the region, not a person. Psilocybe cubensis genuinely grows wild along the US Gulf Coast on pasture dung, and the strain is said to have been collected there. The catch is that the specific stories (Tampa, late-80s Texas, a Houston-area Texas Gulf line) all conflict and none is documented, so the name is best read as a regional label rather than a single pedigree.
No. Gulf Coast is a normally pigmented Psilocybe cubensis with golden-tan caps and a dark print. If you want pale, sparse spores for a different kind of slide, that is the albino and leucistic lines, not this one.
Smooth, thick-walled, roughly oval (subellipsoid) spores, pale amber one at a time and dark purple-brown in mass, each with a small flattened germ pore at one end. Find them at 100x, study the shape at 400x, and get the wall crisp at 1000x under oil. Being a heavy depositor, this line gives you plenty of sample to work with.
A print keeps for years dry on a shelf and suits a patient collector. A syringe puts you at the microscope sooner with less fuss. The vial and swab sit in between on convenience. All are sold for study only.
What customers say
Reviews
its too early to say right now, but fingers crossed!
Ask the community
Questions and answers
No questions yet. Yours could be the first.
For microscopy, taxonomy and collecting only.Sold for legal research. Not for cultivation. Spores contain no controlled substances. We trust you to be responsible.