$22.99
Grow gourmet Grospore Chestnut mushrooms — also known as cinnamon cap or fat pholiota — with our lab-tested 10ml (10cc) liquid culture syringe. True Pholiota adiposa, known for chestnut-brown caps, firm texture and a rich nutty flavor. Live mycelium, not spores.
Cultivate Chestnut mushrooms with our premium Grospore 10ml (10cc) liquid culture syringe. Known for their attractive chestnut-brown caps, firm texture, and rich, slightly nutty flavor, Chestnut mushrooms are a favorite among gourmet growers and culinary enthusiasts. The species is Pholiota adiposa, and it is also sold as cinnamon cap or fat pholiota.
Their dense clusters and distinctive appearance make them an excellent choice for anyone looking to expand their collection with a visually striking and flavorful mushroom variety.
“Chestnut mushroom” means three different things depending on where you shop, so here is exactly what you are getting. This culture is Pholiota adiposa, the chestnut mushroom of US cultivation, also called cinnamon cap. It is not the brown Agaricus bisporus sold as “chestnut mushroom” in UK and European supermarkets — that is cremini, crimini, baby bella or Swiss brown. It is also not Cyclocybe aegerita, which is sometimes called chestnut but which we sell separately as Black Poplar / Pioppino.
Our Grospore Chestnut / Cinnamon Cap 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.
Chestnut mushrooms combine attractive appearance, excellent texture, and a rich savory flavor that makes them a standout addition to any gourmet mushroom collection.
Whether you’re an experienced cultivator or exploring new mushroom varieties, Chestnut mushrooms provide a rewarding growing experience and a versatile ingredient for the kitchen.
Add a premium gourmet variety to your cultivation lineup with our Grospore Chestnut Mushroom Liquid Culture Syringe. Each 10ml (10cc) syringe contains lab-tested, vigorous living mycelium ready for your next mushroom growing 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.
Derek Langford –
Ran this into a couple grain jars and it moved way quicker than I expected. Mycelium looked clean, spread evenly, and never got that sketchy stalled-out vibe I’ve had with weaker syringes. Once transferred to hardwood substrate, it kept trucking and threw nice clustered fruits with solid texture. Pretty stoked with how dependable the whole run was. This one actually did the thing, no drama.
terry_hobbs –
Compared with my previous chestnut culture from another seller, this one was more consistent from the start. The last syringe looked thin and took a long time to get moving on grain, while this culture showed healthy strands and colonized more evenly. I used similar jars, similar inoculation amounts, and the difference was noticeable. Not a miracle product, just a cleaner and more reliable run than the one I tried before.
Zanele M. –
As a first-timer, I was braced for a mess or no growth at all. Instead, both jars showed healthy colonization faster than I expected. That alone calmed me down a lot.
T.C. –
Reordered this after keeping notes from my first syringe, and I rarely buy the same culture twice unless the numbers make sense. On the first run, I used 2.5cc in each of two sterilized grain bags and had evenly distributed growth without any suspicious spots or slowdown. What convinced me to order again was consistency: same visible mycelial strands in the liquid, same clean draw through the needle, same steady colonization pattern after refrigeration. I also appreciate that this is clearly labeled as true Pholiota adiposa, because the chestnut naming confusion gets old fast when you are trying to compare results across grows. Second syringe performed close enough to the first that my notes almost overlapped. For me, that is the real reason to reorder.
T.C. –
Reordered this after keeping notes from my first syringe, and I rarely buy the same culture twice unless the numbers make sense. On the first run, I used 2.5cc in each of two sterilized grain bags and had evenly distributed growth without any suspicious spots or slowdown. What convinced me to order again was consistency: same visible mycelial strands in the liquid, same clean draw through the needle, same steady colonization pattern after refrigeration. I also appreciate that this is clearly labeled as true Pholiota adiposa, because the chestnut naming confusion gets old fast when you are trying to compare results across grows. Second syringe performed close enough to the first that my notes almost overlapped. For me, that is the real reason to reorder.
clay_bennett –
Before ordering, I sent support a pretty basic question about whether this was actually Pholiota adiposa and not one of the other things sellers call chestnut. I did not want a vague sales reply. To their credit, they answered clearly, explained the naming mess, and told me exactly what the syringe contained. That should be standard, but a lot of places still dodge simple questions.
I also asked about storage because I was not using it the day it arrived. Same deal. Straight answer, actual temperature range, no canned nonsense. The culture itself looked clean and worked fine, but the reason I would buy here again is that support did not waste my time. I had questions, they answered them like competent adults. That is rarer than it should be.
logan_firth –
Because this was my first time buying liquid culture, I was honestly more stressed about storing it than using it. I kept it upright in the fridge right away and ended up waiting almost a month before inoculating anything. I was worried I had ruined it by just letting it sit there, but it still looked healthy and performed fine when I finally used it. That was a big relief for a beginner like me.
P.W. –
After my last chestnut try stalled, this one took off. Glad I tried again.
Nathan Ricks –
Picked this up for my brother, and I ended up messaging customer service to confirm this was the true Pholiota adiposa chestnut, not cremini. They answered quickly and clearly, which made me feel a lot better about gifting it.
Nathan Ricks –
Picked this up for my brother, and I ended up messaging customer service to confirm this was the true Pholiota adiposa chestnut, not cremini. They answered quickly and clearly, which made me feel a lot better about gifting it.
Anonymous –
What I appreciated most was the labeling and the species clarification. I specifically wanted Pholiota adiposa and not cremini or pioppino, and this made that very clear. Syringe arrived cold, looked clean, and the culture took to grain without any weird slowdown. Nice option if you care about getting the exact variety you ordered.
Caleb Rutledge –
Ordered Thursday 9:12 a.m., tracking updated by lunch, and it was on my porch Saturday morning.
Sean Hollister –
Placed my order early in the week and had tracking later that day. The package moved without any long pauses and showed up sooner than I expected, which mattered because I wanted to inoculate grain that weekend. Everything arrived intact and properly packed. I cannot say much yet about long term performance, but on shipping alone this was efficient and easy to plan around.
Vernon Slade –
Reordered because the first syringe worked, plain and simple. I do not have patience for cultures that stall or get weird. This one stayed clean, moved fast, and gave me a reason to buy it again.
R.G. –
What stood out first was the packaging. Syringe was individually bagged, cap seated firmly, needle wrapped cleanly, and the plunger had no seepage at all. Cold pack was still cool, and nothing rattled around in the box.