- Home
- Organic Lion's Mane Mushroom Grain Spawn
Organic Lion's Mane Mushroom Grain Spawn












Skill level | Beginner |
Grow location | Indoors |
Spawn shelf life | 4 months (refrigerated) |
Certifications | USDA certified organic |
Bag weight | 6 lbs |
Fruiting temps | 55-70°F |
Our USDA-certified organic lion's mane (Hericium erinaceus) grain spawn features a strain that produces plump, dense, shaggy mushroom clusters with a consistency and flavor similar to crab meat. This mushroom is highly versatile and can be enjoyed cooked, dried, extracted, or even steeped as a tea! While slightly more difficult to get flushes than oysters, they are great for confident beginners and are reliable indoor year-round producers. And, if kept in the right conditions, they will yield substantial first, second, and even third harvests (making them an ideal commercial variety!) Note that lion's mane can be prone to drying out if the ambient humidity is too low.
"5 of the Best Lion's Mane Mushroom Recipes"
Recommended use:
- Lion's Mane grain spawn can be used for indoor production using sawdust-based sterile substrate.
- Do not use grain spawn for log inoculation.
- This is not a mushroom grow kit. Lion's mane grain spawn must be combined with a substrate in order to fruit.
Upon receiving your spawn:
Remove it from the shipping box as soon as possible. Then, unfold the top of the bag, making room for air space. It's also important to check and confirm that the filter patch is not obstructed. This will help the organism breathe and continue to thrive!
Scroll down for specifications, growing, and storage guides.
-
- Weight: Approximately 6 lbs
- Hydration: Average of 47%
- Bags: Gusseted 2.2 mil polypropylene
- Filter: High efficiency .2 micron
- Inoculation Rates: 6 lb. bag of grain will inoculate between 120-165 lb. sterilized sawdust, and 100-130 lb. pasteurized straw
- Sterilization method: Commercial grade autoclave sterilized
-
Temperature 55-70°F | 13-21°C Humidity (Phase 1: Primordia) 90-95% Humidity (Phase 2: Fruitbody) 80-90% CO2 Sensitivity (Phase 1: Primordia) 500-700 ppm CO2 Sensitivity (Phase 2: Fruitbody) <1,000 ppm - Primordia - The earliest recognizable stage of fruitbody development. Also known as “baby mushrooms” or “mushroom pins.”
- Fruitbody - A fully grown mushroom, the reproductive structure of the organism in which the spores are produced.
- 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.
-
Lion's mane mushroom grain spawn can be mixed into sterilized hardwood sawdust to create lion's mane substrate blocks.
Note: Grain spawn must be mixed with bulk substrate before you can fruit it. If you are new to growing mushrooms, we recommend purchasing a book on mushroom cultivation.
Recommended reading:
'Growing Gourmet and Medicinal Mushrooms' by Paul Stamets
'Organic Mushroom Farming and Mycoremediation' by Tradd Cotter
-
If you don't plan to use immediately, you can refrigerate your spawn for up to 4 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!
-
Our grain spawn is USDA certified organic and made using organic cultures from our own culture bank. It contains a blend of locally sourced, organic, and non-GMO ingredients from farms in New England and North America.
-
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.
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!

Quality spawn!
I used this spawn for multiple fruiting bags, and then using the leftovers was able to make my own spawn with grain to grain transfer. Good stuff!

More than I expected!
This grain spawn has more than exceeded my expectations. I’m a first time grower and am experimenting with grain transfer as well as “just planting” my grain spawn. It’s only been a week and I’m already expecting huge results from both. Thanks guys!!!

Nice snowballs
I've been buying your lion's mane for a while now and consistently had very good results. Beautiful looking fruits. It doesn't take much grain spawn per bag, colonizes nicely. This one is very popular with my customers and I'll keep ordering it regularly. I like that you use FedEx for shipping, instead of UPS because they drop off right at my door, while UPS leaves spawn at the gate, often in the hot sun.
North Spore
So glad you are satisfied! Looking forward to seeing what you do next!

Mushrooms for non-mushroom lovers
This grain spawn is awesome and the fruiting bodies were gorgeous. My gf (who hates mushrooms) couldn't get enough of the crabcakes that I made with lion's mane. I am now consistently buying from North Spore. Also, I'm a teacher (a non-science class) and my students love to watch them grow in the classroom! (I'm a big fan of their blue oyster and pink oyster grain spawn as well) Thanks NS!

Lobster of the Trees!
We love our Lions Mane as "mush" as our customers. The taste and texture is outstanding! My husband who doesn't eat mushrooms loves these. The spawn is very healthy and colonizes quickly. Great size and multiple flushes will keep us buying from North Spore!

Excellent
This grain spawn is awesome! Excellent product, this is my second time buying from them, always quality
Lions Mane
Second time ordering from North Spore and they do not disappoint! If you are looking for Lions Mane grain spawn, definitely order from North Spore. Overall experience is great! From their customer service to their spawn, simply outstanding! Will continue to order from North Spore!

Lion's Mane
This is my second time buying the Lion's Mane grain spawn from North Spore and just like the previous batch it is super healthy and a fast grower. I colonized some hot water pasteurized aspen chips on 4/14 (about 10 oz to 4lbs of damp chips) in an autoclave bag and already I'm seeing happy little lion's mane pins starting to form. Also worth noting, when I got the bag I was worried that a spot was possibly contamination and emailed in a photo to the team, they responded quickly and informed me that what I was seeing was a fruiting body that was possibly starting to decompose. Easy fix, I picked out that spot as they suggested and then used the grain as normal with my aspen chips. I would definitely suggest using the grain spawn from North Spore as its quality, and they're a friendly and informative group. It may be a bit of a wait to get the grain spore, but they communicate that and it's worth it in my opinion.

Lion's Mane Grain from Maine
This was my second time ordering from North Spore and they did not disappoint. I ordered LION'S MANE grains. It took my order about 10 days to arrive. From Maine to VA that's pretty good considering how mail has been during this **** in our Earths timeline. Grains were fully inoculated and clean. ZERO contaminants. I did a couple grows mixing the grains with sawdust . Did up a few cardboard boxes up of Lion's Mane grain and soaked cardboard(make sure you get the corrugated sections) for some cold inoculation boxes. THEY LOVE THE WOOD GLUE. Then use the inoculated cardboard sheets for projects . Press between to sawed log rounds etc. I've really been playing around focusing on more outdoor projects as I have the land and more important the LOGS. Gonna use the grain to make up some WOOD PLUG SPAWN for logs. If you're reading this go with North Spore. Go with them for the product quality and customer service . I haven't had to send anything back but I know they are there for you if your product is subpar (which will be doubtful but it happens). 5 out of 5 fruiting bodies(stars) Say it with me LION'S ......(say it like Terrance Howard from Hustle and flow ) MANE.............LION'S MANE GRAIN FROM MAINE

Great for a first time grower
I received the grain spawn quickly, and was able to produce 10 bags of substrate and spawn leading to productive fruits. No contamination and solid growth. First grow of lion's mane and will do it again.