$22.99
Grow premium Grospore Black Pearl King Oyster mushrooms with our lab-tested 10ml (10cc) liquid culture syringe. Also sold as Black Pearl Oyster, Black King Oyster or simply Black King, this hybrid is known for thick meaty stems, dark gray caps and vigorous growth. Live mycelium, not spores.
Cultivate Black Pearl King Oyster mushrooms with our premium Grospore 10ml (10cc) liquid culture syringe. This distinctive hybrid is known for combining characteristics of King Oyster and Pearl Oyster mushrooms, producing thick, substantial stems with broad, dark gray to charcoal-colored caps.
Sold across the market as Black Pearl King Oyster, Black Pearl Oyster, Black King Oyster or simply Black King, this cross of Pleurotus ostreatus and Pleurotus eryngii is prized by growers and chefs for its meaty texture, rich savory flavor, attractive appearance, and excellent culinary versatility.
Our Grospore Black Pearl King Oyster 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.
Black Pearl King Oyster offers an impressive combination of appearance, texture, flavor, and cultivation performance. Its thick stems and dark caps create a premium presentation, while its dense texture makes it especially popular for grilling and other hearty recipes.
Whether you’re a home grower, culinary enthusiast, or experienced mushroom cultivator, Black Pearl King Oyster is an excellent addition to a gourmet mushroom collection.
Experience one of the most distinctive gourmet Oyster varieties with our Grospore Black Pearl King Oyster 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.
Walter Crosby –
I order cultures regularly here, and shipping is consistently quick with reliable tracking.
Simon J. –
Stored this upright in the back of the fridge for a little over five weeks before I had time to use it. The culture still looked healthy when I took it out, with visible strands and no odd discoloration. I let it warm slightly, shook it, and it drew smoothly. For me, the shelf life matched the storage guidance, which is what I wanted most from a liquid culture.
Landon, AR –
Price made me hesitate since 10cc never looks like much on paper. After using it, I changed my tune. The culture was active, a little went a long way, and I got better mileage than expected for the money.
Thiago Alves –
This ended up being one of those rare buys where I knew pretty quickly I’d be ordering again. I started with one syringe to test it in a couple grain jars and liked how straightforward the whole process felt. Everything looked healthy, the culture moved well through the syringe, and I didn’t run into the annoying little issues that make you hesitate before a second purchase.
What really pushed me into reordering was how convenient it was to keep one on hand once I saw it perform the first time. I used most of the first syringe faster than expected, so I came back for another before I even finished that grow. If you are building out a small rotation of gourmet varieties, this is the kind of one I’d happily restock instead of treating as a one-off experiment.
Mirek Kowalski –
Got this as a birthday gift for my brother, who is much deeper into mushroom growing than I am. Since I was the one receiving the package and passing it along, the packaging was the part I noticed most. Everything arrived discreetly, with the syringe secured well so it was not rattling around in the box. The cap and needle cover were snug, and nothing looked leaked, cracked, or beat up from shipping.
I also appreciated that it looked organized rather than tossed together, which made it feel giftable instead of like I was handing him a science project in a sandwich bag. He was happy with it right away, mostly because it looked clean and properly handled. I cannot speak to the grow results myself, but as a gift purchase, the presentation and condition were absolutely solid.
mush_mike –
Used this for a small weekend grow project and the shipping impressed me more than anything. It arrived cold-packed, tucked securely, and nothing leaked. I put it straight into two grain bags and saw healthy growth sooner than expected. Nice option if you want something dependable without paying crazy prices.
Harold Winslow –
What I check first with liquid culture is packaging, because that usually tells me how careful the rest of the process was. This one arrived in a rigid mailer with enough padding that the syringe could not rattle around, and the needle cap was firmly seated with no looseness at all. The plunger was wrapped cleanly, the label was legible, and the volume markings were easy to read without rotating the barrel under bright light. I also liked that the contents looked undisturbed, with visible mycelium strands and no sign of leakage on the sleeve or inside the bag. Even the storage note was included in a way that was actually useful instead of getting buried. Small details, but they matter, and this shipment looked organized from start to finish.
clint_harper –
For my first try, I used this on one small hardwood sawdust bag because I was afraid to waste it. It took way less guesswork than I expected, and the growth started looking healthy pretty quickly.