$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.
Anonymous –
Before placing my order, I contacted customer service because I wanted to confirm this was the actual Pholiota adiposa culture and not the other mushrooms sometimes sold under the chestnut name. They replied with a clear explanation of the differences and also answered my question about using it first on grain before moving to a hardwood substrate. The response was direct and specific, which helped me decide to order. After it arrived, I had one more question about refrigerated storage since I was not ready to inoculate immediately. I got another useful reply without a long wait. The culture itself looked clean and performed normally for me, but the main reason I would order again is that support gave accurate information instead of vague sales language.
Anonymous –
Before placing my order, I contacted customer service because I wanted to confirm this was the actual Pholiota adiposa culture and not the other mushrooms sometimes sold under the chestnut name. They replied with a clear explanation of the differences and also answered my question about using it first on grain before moving to a hardwood substrate. The response was direct and specific, which helped me decide to order. After it arrived, I had one more question about refrigerated storage since I was not ready to inoculate immediately. I got another useful reply without a long wait. The culture itself looked clean and performed normally for me, but the main reason I would order again is that support gave accurate information instead of vague sales language.
Walter Phelps –
Tracked this culture on two grain jars and one agar plate because I wanted clean, measurable results. First visible expansion showed up quickly, and the growth stayed even instead of forming patchy weak spots. By the end of colonization, both jars had dense, bright mycelium with no off colors or slowdown. Once transferred to hardwood substrate, it fruited in tight clusters with sturdy stems and nicely colored caps. Really solid performance start to finish.
Walter Phelps –
Tracked this culture on two grain jars and one agar plate because I wanted clean, measurable results. First visible expansion showed up quickly, and the growth stayed even instead of forming patchy weak spots. By the end of colonization, both jars had dense, bright mycelium with no off colors or slowdown. Once transferred to hardwood substrate, it fruited in tight clusters with sturdy stems and nicely colored caps. Really solid performance start to finish.
Yasmin al-Karim –
Picked this up for my dad because he likes trying less common gourmet varieties and wanted a true Pholiota culture, not one of the other mushrooms sold under the same chestnut name. He did not use it right away, so the fridge life mattered. He stored it chilled for a while before inoculating and said it still looked healthy and active when he finally got to it. That alone made it a good gift choice.
Sofía del Mar –
Being new to liquid culture, I was weirdly stressed about leaks or a bent needle. The syringe came sealed, clearly labeled, and packed securely. That alone made me feel a lot better before I even started.
J.L.D. –
Really loved how clear the instructions were. Easy to follow, even on my first run.
Edwin Fletcher –
Sent customer service a probably overcautious question about storage and inoculation. They replied like actual humans, which I appreciate in this age of canned wisdom. Clear answer, no upsell, no mystery. Almost suspiciously competent.
Anonymous –
Instructions were clear enough. I didn’t have time to decode nonsense.
Anonymous –
Instructions were clear enough. I didn’t have time to decode nonsense.
Trevor –
I rotate several gourmet cultures, and this one feels worth the price for clean, reliable starts.
mush_mike –
Shipping was quick and the pack job was solid. Mine came with the needle sealed separately and an ice pack that was still cool, which I appreciated because my mailbox gets hot. I put this one to grain the same evening and it bounced off fast with even growth. If you care about clean handling and not just the culture itself, this was a good buy.
Glenn –
I bought this just for a two-jar hardwood grain test and honestly expected one to stall. Instead both took off cleanly and evenly. Still waiting on the final grow, but for that small trial run, it won me over.
Derek Callahan –
I expected a canned reply when I asked customer service about storing the syringe and using it on grain. Instead I got a clear, specific answer the same day. That alone made me feel better about ordering, and they were right.
Derek Callahan –
I expected a canned reply when I asked customer service about storing the syringe and using it on grain. Instead I got a clear, specific answer the same day. That alone made me feel better about ordering, and they were right.