$22.99
Grow gourmet Grospore Brown Beech mushrooms — also sold as buna shimeji, brown shimeji or brown clamshell — with our lab-tested 10ml (10cc) liquid culture syringe. Hypsizygus tessellatus is prized for a rich nutty flavor, firm texture and elegant clustered growth. Live mycelium, not spores.
Cultivate Brown Beech mushrooms with our premium Grospore 10ml (10cc) liquid culture syringe. Also known as Brown Shimeji, buna shimeji, beech mushroom, brown clamshell or seafood mushroom, these gourmet mushrooms are recognized for their small brown caps, slender pale stems, firm texture, and rich, nutty flavor.
The species appears in catalogues as Hypsizygus tessellatus, Hypsizygus tessulatus and Hypsizygus marmoreus — all the same mushroom. Brown Beech mushrooms are especially popular in Asian-inspired cuisine and are valued by growers and chefs for their attractive clustered growth, excellent cooking texture, and distinctive savory taste.
“Shimeji” is an umbrella term covering several unrelated mushrooms, so it is worth being precise. This culture is Hypsizygus tessellatus, the cultivable brown beech mushroom. It is not Lyophyllum shimeji, the true hon-shimeji, which is mycorrhizal and cannot be grown from liquid culture at all — retail packs labelled “hon shimeji” are almost always this species. It is also not the white bunapi / alba clamshell variety, which is a separate cultivar.
Our Grospore Brown Beech / Buna Shimeji Liquid Culture Syringe contains vigorous living mycelium, lab-tested and prepared in our ISO-certified cleanroom to support healthy colonization and dependable cultivation performance.
Each 10ml (10cc) syringe offers:
Refrigerate your liquid culture syringe on arrival. Stored at 35–45°F (2–7°C), upright and out of direct light, it stays viable for 4–6 months. Orders ship fast from Oregon in discreet packaging, with tracking on every order and a 30-day return policy on unused items.
Brown Beech mushrooms offer an appealing combination of flavor, texture, and presentation. Their compact clustered growth and characteristic brown caps make them a distinctive addition to any gourmet mushroom collection.
Whether you are expanding your cultivation lineup or exploring new culinary mushroom varieties, Brown Beech provides a rewarding growing experience and an exceptional ingredient for the kitchen.
Add a distinctive gourmet variety to your collection with our Grospore Brown Beech Mushroom Liquid Culture Syringe. Each 10ml (10cc) syringe contains lab-tested, vigorous living mycelium ready for your next cultivation project.
Gourmet and edible cultivation species only. GROmagic does not sell psilocybin or Psilocybe cultures. For cultivation use — not a food, drug or dietary supplement.
Samira Haddad –
Went into this as a first-timer with way too many notes and a lot of second guessing. The syringe itself looked clean, the culture spread evenly after a gentle shake, and inoculation was straightforward. I appreciated how clear the volume guidance was because it kept me from overdoing it on my grain jars. No weird smell, no obvious contamination, and growth started faster than I expected. For a nervous beginner, this was a reassuring one to work with.
Anonymous –
Really pleased with how this performed. I put it to grain first, and the mycelium got moving fast with nice even growth and no weird stalls. Once transferred, it stayed vigorous and gave me compact clusters with the firm texture I was hoping for. The flavor after cooking was excellent too, rich and nutty. For a variety I had not tried before, the results were honestly better than expected.
Bradley Sutton –
Ordered it, and it showed up fast. That’s what mattered.
Basil Okoro –
Ten milliliters was accurately filled, mycelium was visible, and one syringe cleanly started more jars than expected.
Mirela Stoica –
For me the packaging was the main test, because liquid culture is only useful if it arrives intact and clearly labeled. This one checked the boxes. The syringe was sealed, the cap fit snugly, and nothing had leaked into the mailer. I also liked that it was easy to read what I had put into the fridge later, which sounds minor until you have a few projects going at once and mystery syringes start appearing like leftovers.
The liquid itself looked clean and evenly suspended after a gentle swirl. Needle was included and packed separately, which I prefer. Cold pack was no longer icy by delivery, but the contents were still cool to the touch. Overall, the presentation gave me confidence that basic handling and packing standards were taken seriously.
Derek H. –
Got this for my brother after his last shimeji culture stalled. He said this one looked much cleaner.
Marshall Q. –
My last brown beech attempt from another seller was a waste of grain. Slow start, uneven growth, then contamination. This syringe did what the other one should have done in the first place. Clean-looking culture, faster takeoff, and more consistent colonization across both jars. Not magic, just competent. I still had to do my part, obviously, but compared to the previous run, this was a lot less aggravating.
Marshall Q. –
My last brown beech attempt from another seller was a waste of grain. Slow start, uneven growth, then contamination. This syringe did what the other one should have done in the first place. Clean-looking culture, faster takeoff, and more consistent colonization across both jars. Not magic, just competent. I still had to do my part, obviously, but compared to the previous run, this was a lot less aggravating.
Kent, ID –
Needed this for a brown beech side run on two supplemented sawdust bags. It did the job. Colonization started clean and even. Fruiting took patience, which is normal, but nothing stalled or turned funky.
clark_spawn –
Been ordering cultures for years, and these instructions stay clear, consistent, and actually useful every time.
Trenton –
Reached out before ordering because I wanted to confirm this was the actual brown beech strain and not mislabeled shimeji. Customer service replied fast, answered every question clearly, and gave me enough confidence to place the order immediately.
Trenton –
Reached out before ordering because I wanted to confirm this was the actual brown beech strain and not mislabeled shimeji. Customer service replied fast, answered every question clearly, and gave me enough confidence to place the order immediately.
Brandon Wilcox –
Compared to my last shimeji try, this absolutely took off. Huge upgrade.
Philip T. –
I almost passed on this because ten cc never looks like much for the money, and brown beech is not something I wanted to waste time or substrate on. My assumption was that I was paying mostly for nice packaging and a fancy description. After actually using it, I changed my mind. The culture looked healthy, moved cleanly into grain, and colonized fast enough that I did not feel like I had gambled on a tiny syringe of wishful thinking. What made it feel worth the price was reliability. I would rather pay a bit more once for something that starts strong than save a few dollars and lose jars, time, and materials to weak or questionable culture. Not the cheapest option, but in real growing terms it ended up being good value.
Philip T. –
I almost passed on this because ten cc never looks like much for the money, and brown beech is not something I wanted to waste time or substrate on. My assumption was that I was paying mostly for nice packaging and a fancy description. After actually using it, I changed my mind. The culture looked healthy, moved cleanly into grain, and colonized fast enough that I did not feel like I had gambled on a tiny syringe of wishful thinking. What made it feel worth the price was reliability. I would rather pay a bit more once for something that starts strong than save a few dollars and lose jars, time, and materials to weak or questionable culture. Not the cheapest option, but in real growing terms it ended up being good value.