White Button Mushroom (Agaricus bisporus) Liquid Culture for Mushroom Cultivation on Grain or Agar

Colonized like a beast in rye berries. Starting to fruit now in an all-in-one wood lover bag.

Was able to produce great oysters!! Expanded fine and everything is good!

I purchased the 10 ml syringe of Red Reishi liquid culture in August 2025. Along with 3 other LC syringes from other distributors. Split all of them between grain and more LC. All of the others have grown and produced. But not the Reishi. It appears to be dead. No growth in the grain. No growth in the liquid culture. It is now mid January. I’ve tried several times from the liquid culture on grain and agar. Nothing.

The most dependable, trouble free oyster strain. Clean in grain and LC.

I was not impressed with the amount of mycelium present as the syringe did not contain much at all compared to other reviewers. Never the less I planted it; some in used coffee grounds with ground wheat flakes and the other half in hardwood pellets and ground wheat flakes. Both appear to be growing a healthy amount of mycelium. Since there was not much mycelium in the syringe compared to the growth medium I was unable to instill any into a log as I had hoped.

I ordered two spore syringes: one Portobello and one White Button. Unfortunately, the Portobello syringe was contaminated—the mycelium inside had a clumpy, slimy texture, clearly unsuitable for use. I’ve contacted the seller and am waiting for a refund for this syringe. On the positive side, the White Button syringe was perfect, with clean and healthy mycelium. Update: The refund process worked perfectly, and the seller took the time to address my concerns in a very professional and friendly manner. I am happy to update my review to 5 stars.

I bought 3 strains, and made a large batch of agar solution to work with, worked with a sill air box and a flow hood. The white enokitake took wonderful hold, rizomorphic mycelium. 10 dishes, no contam. Wine caps, same thing maybe a little less aggressive growth. With the lions mane, every single dish had bacterial contamination which leads me to believe the stringe was the source of the issue. Unfortunately it was the lions mane i was most excited for 😅 If it weren’t for that I’d recommend this seller but this was the first case ive ever had with a contaminated syringe.

Happy with this product. The only critical feedback I have is that the syringe had leaked a little bit- but it appears to be because it was overfilled- not because it was poorly closed or anything. Great amount of visible culture inside. Looking forward to seeing results.

Purchased two syringes of the King Oyster Mushroom liquid culture. From time of purchase to delivery, it was possible to track every step of the way. The packaging is designed to protect the syringes and ensure that they arrive intact. Instructions in my syringes are clear and straightforward. I will update this once I have inoculated my rye spawn bottles. From what I can already see, the liquid culture is robust and not affected by the trip from Florida to Calgary, Alberta.

Unfortunately did not produce fruits.

Haven’t planted yet but very excited to get started as I’ve read it takes 3 or more years for the morel mushrooms to pop up!