North Spore Organic Lion's Mane Mushroom Spray & Grow Kit (4 lbs) | USDA-Certified Organic, Non-GMO, Beginner-Friendly & Easy to Use | Handmade in Maine, USA

This two-pack of 4-lb blocks is the best deal available for this species. The larger substrate holds enough nutrients to support a remarkable harvest, so the results justify the effort. Plan for proper temperature and humidity—around 70°F and 90% relative humidity—and choose the right season or indoor spot to maintain those conditions. Even as a beginner, I saw first flushes of over half a pound after trimming them to a market-ready appearance. The flavor is outstanding, and the mushrooms shine in sauces, sandwiches, or side dishes. Let the bags rest a couple of days before starting, and treat them like the living organisms they are. You’ll be glad you did.

Easy and quick to grow!

The kit provided two flushes of beautiful, puffy Lion's Mane mushrooms. I use the mushrooms to make Lions Mane tincture. I save a ton of money this way, and I know the quality of the product. I will certainly order again!

This product was easy to use and the first flush grew pretty quickly and easily. The second flush was small, discolored and kind of dry so I pulled it out and hoped for the next one...it never grew anymore mushrooms. I did soak the block as they recommended and put up a plastic tent around it but nothing else ever came of it. The first flush was very tasty and I was really excited to try more products from them...but for the cost it just didn't produce enough to buy it again.

Grew on time still have about three days left. Hoping to see a second and third maybe even a fourth flush. Make sure it’s an almost constant 70 degrees maybe 15 degrees higher or lower at the max. In a cold dark room. Can’t wait to try it.

On the Lion's mane growing kit, I followed the directions exactly, got a little white to start showing, but then it turned into black mold, and never recovered or grew more. I kept spritzing it 2 twice a day for about 6 months when I finally gave up. I reached out to North Spore because they have a grow guarantee printed on the box. They responded to my request for a replacement with they won't honor the grow guarantee because I the grow guarantee is only honored for 3 months from the date of purchase. However I didn't see this catch written on on the box anywhere. Can't recommend this brand since it didn't fruit and became moldy, and they didn't honor their guarantee when I gave it additional time to grow and do something, to no avail.

amazon.com Feb 28, 2026 I received the lion's mane grow kit on Feb. 19 in good condition. I cut the plastic open in the usual X shape and put a hunidifier by the kit in the kitchen. It's now Feb. 28 and I just collected the large lion's mane off the grow kit. Very easy a nice looking fluffy mushroom! The size is about 8 inches high by by 6 inches wide and 5 inches thick. Pictures show day 3 and day 10, when harvested.

I'd grown oyster mushrooms from other brand kits before (the ones at the big box stores) but this was my first time growing Lion's Mane and trying out North Spore products. My kit arrived four days after I ordered it back in November and came with several small baby mushrooms already growing inside the bag that were mushy and browning a bit on some of their edges. The bag didn't appear to be open but the substrate was pretty cracked. I emailed North Spore's info email listed on their website asking if this was normal and their customer service team promptly replied saying I could just remove the existing fruiting bodies and it should be fine and that sometimes the substrate blocks can be broken up in transit but that should not affect the growth. They were right! I got a huge bountiful first flush followed by two more flushes as I opened up more of the bag and continued to keep the block hydrated. I'm currently seeing if I can go for a fourth flush since the mycelium still looks good. My favorite easy recipe for cooking with these is to slice the lion's mane mushrooms into about 1/4" thick slices, brown them in a dry hot pan without any oil so they dehydrate a bit, then finish with a generous pat of butter and a sprinkle of coarse ground salt and black pepper. Eat immediately. So delicious! I also like adding chunks of the smaller sized mushrooms to soups and stews, anything really. I would definitely buy more kits from North Spore. Really great experience!