- Home
- Lion's Mane Mushroom Grow Kit Fruiting Block
Lion's Mane Mushroom Grow Kit Fruiting Block












Skill level | Beginner |
Grow location | Indoors |
Grow speed | 1.5 to 2 weeks |
Shelf life | 6 months (refrigerated) |
Flavor profile | Mild, crab-like |
Kit dimensions | 6in H x 9in W x 6in D |
Kit weight | 5 lbs |
Lion’s Mane (Hericium erinaceus) is a nutritious medicinal mushroom that produces plump white clusters with icicle-like teeth. In addition to making an amazing meat substitute, it is an absolute culinary dream both in texture and flavor. That’s because, when cooked, it has a consistency and flavor similar to crab meat.
“5 of the Best Lion’s Mane Mushroom Recipes”
Though slightly harder to get flushes than oysters or shiitake, lion's mane fruiting blocks are still a great mushroom for confident beginners. They colonize quickly and are relatively reliable producers. Note that Lion's mane can be prone to drying out if the ambient humidity is too low, so we recommend that you water it generously or grow your fruiting block in a humidity-controlled chamber.
⮕ Click for printable instructions
Or, click “Instructions” below for a digital step-by-step guide.
-
Your fruiting block kit is an amended sawdust block that has been colonized by mushroom mycelium. Mushrooms need adequate humidity and ventilation to survive and thrive, so proper care is important.
1. Leave the block inside the bag, and do not open it. To activate your block, place it on its side, exposing an area where the block presses right up against the plastic. Take a sharp knife or razor blade and make a 5-to 6-inch cut along this part of the bag, then gently squeeze out any remaining air. Finally, take the loose bag flap, and fold it underneath the kit.
2. Place your sliced bag in the most humid part of your home (like next to the sink) or in a humidity-controlled grow chamber. Make sure it is kept away from direct sunlight, and keep it well hydrated. Do this by spraying the outside of your block, over the sliced area, with water at least once per day.
3. If your home is very dry, and you do not have a humidity-controlled grow chamber, you may need to make a humidity tent to place over the over fruiting block. To do this, find a loose-fitting plastic bag and make plenty of ½-inch holes all over it. Then place it over the fruiting block (that is still inside it’s original bag.) Once you’ve made the humidity tent, be sure to spray the inside of it a minimum of once per day.
4. Within 1-2 weeks of first slicing open your fruiting block bag, the mushrooms will sense the oxygen in the air and begin to produce mushroom “pins,” or little baby mushrooms. When you spot your first mushroom pins, keep a close eye on them. After 5 to 10 days of pin formation, your mushrooms should be ready to harvest.
5. Harvest your mushrooms when they resemble the mushrooms in the photographs -- large clusters of plump, dense, shaggy mounds.
Each subsequent harvest will be smaller in size, but can still produce a nice flush. Before trying for another flush, give your block a one-week break from spraying, then soak it in cold water for 20 minutes, and re-start daily water spraying.
-
Fruiting temps 55-70 degrees F Humidity 80-90% CO2 Sensitivity <1,000 ppm - Fruiting - The phase of growth in which visible mushrooms begin to appear.
- CO2 sensitivity - When CO2 levels are too high, yields will decrease, stems will become long and stringy, caps will be small, and/or growth will halt.
-
If you don't plan to use immediately, you can refrigerate your block for up to 6 months.
-
"5 of the Best Lion's Mane Mushroom Recipes"
Its unique flavor and consistency make it ideal as a seafood substitute in recipes. We like to slice it into rounds and pan-fry it in olive oil or butter. We also recommend ripping it up and making vegan or vegetarian crab cakes with it. You can find some amazing recipes online!
-
If your home is really dry you may want to make a humidity tent to place over your bag. Simply take a trash bag or other loosely fitting plastic bag, put PLENTY of 1/2 inch holes in it. (THIS IS IMPORTANT mushrooms exhale CO2 and inhale Oxygen. They will suffocate themselves if there isn’t adequate airflow! Lion’s mane that look stringy or strange are usually growing that way because they need more air or humidity!) If you choose to use a humidity tent make sure to spray the inside of the tent once per day to maintain humidity.
-
If you’re going to consume home-grown mushrooms, make sure to cook your fresh mushrooms thoroughly with heat. If it is your first time eating this species, it is best to start with a small amount to check for allergies, even if cooked.
Mushrooms grow spores as they develop. This is a natural means of reproduction. This is when people with allergies or compromised immune systems may want to consider putting fruiting mushroom kits outdoors or in a well-ventilated area. Spores in mushrooms sometimes cause respiratory irritation. In rare cases, spores may also cause irritation for some non-allergic or non-immunocompromised mushroom growers. If you are one of them, it is recommended to reduce the overall spore load by harvesting mushrooms while they are still in their younger growth stages.
You may also like
- Reviews
- Questions
Thank you for submitting a review!
Your input is very much appreciated. Share it with your friends so they can enjoy it too!
Great first time grow
Great, found this easy to grow in a tub with a few sprays every day I found it fruiting and growing within a week, and with a week more of growing, I should have some mighty-sized Lions Mane to enjoy. :)

Yummy first mushroom
First time growing mushrooms and I am loving it. I grew up in the woods so morals and sulphur shelf were treats wherever we could find them, this is my first lions mane and boy are they yummy couldn't even stop to take the pic after one bite, six ounces with a larger flush on the way! Gonna order some other blocks for the tent. Thanks!!

Spectacular Multiple Flushes
Well developed mycelial block that enabled me to harvest fruits multiple times. I’m using this batch (and futures) to make Lions Mane supplement capsules to promote brain health (shout out to Paul Stamets) for myself and my mother who is beginning to experience mental fog and memory loss. Supplements can become very expensive over time abs this is a great way to ensure quality while having fun doing it. Thanks guys

WOW!
My first experience with lions mane mushrooms, growing and tasting. I first tried vegan crab cakes, I'm not vegan, and they were okay, but, man, they rocker in my cajun seafood gumbo!
North Spore
Gumbo sounds like a great way to use Lion's Mane!

Gorgeous and scrumptious!
Richard (named for Richard Ayoade, who also has incredible hair) was a bit more challenging for me than the various oysters I have worked with so far, but well worth it. I highly suggest trying lion's mane "crab" cakes.
North Spore
Good job with Richard!

lions mane was great
Great kit and easy to split and bulk out for larger production.

My next step up
The lions mane spray and grow represents by first feeling of success in mushroom growing, so I stepped up to this fruiting block. It has already gotten ahead of me fruiting in the bag, really great to see.

Great flush
First time growing lions mane and had a great first flush, waiting on second now

Fun and easy!
This is probably the easiest mushroom kit I've had. Followed the instructions, placed a humidifier by it and off it went. They are really interesting to watch grow and they are delicious!

This Lion's Mane Roared for us beginners!
We bought 2 of these kits and followed the directions loosely. I think we let the spores grow in the bag for longer than recommended. The bags were totally whited out and there was some limited "Fruit" growth on the inside. We ended up cutting the bags open and placing them in our giant open concrete shower area (The most humid spot in the house). We didn't spray them directly but they were frequently misted. We were delighted to see them jump out of the bag and produce large mushrooms as advertised in the pictures. We are going to harvest them today, eat them tonight and hope for another round of mushrooms in the next couple weeks.