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!
Second image courtesy of Cleveland Fungi
Scroll down for specifications, growing, and storage guides.
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- 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
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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.
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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
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If you don't plan to use immediately, you can refrigerate your spawn for up to 4 months.
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"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!
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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.
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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.
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- Reviews
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Lions Mane
Great product with excellent customer service. I’ve ordered a ton from North Spore; they have a customer for life.
North Spore
Thanks so much for the great review Chris! We couldn’t do it without customers like you.

Popular
I get so many requests for Lion's mane, I can't keep up with production. Grows well, but of course slower than oyster mushrooms which are very aggressive.
North Spore
Thanks for sharing, Karin! Your lion's mane looks amazing! Please reach out if you ever need anything.

Fruits every time
I love this company’s lions mane spawn. I never have any issues!
North Spore
Thanks, Jazmine! We really appreciate your support.

Great product!
I have ordered from North Spore many times and have always received great that exceeds my expectations! I highly recommend buying from them.
North Spore
Thanks for the great review, Brian! We really appreciate your support


Great spawn
I've purchased spawn from North Spore a few times now and I can't be happier. I have just about every type of spawn and have had great success. If you don't have the time to create the spawn yourself this is the answer. I have used these on a couple occasions when in a time crunch and was I fruiting in no time.
North Spore
Thanks for the great review, Bryan! We really appreciate your support.

Full on Grow!
I got this box to do with my teen. It did so well that we ended up making a complete monotub… then it grew out of all of the FAE holes! It even flushed again! Awesome grow and fun to play around with recipes.
North Spore
Thanks for sharing, Richard! We appreciate you taking the time to share your experience.

Checkout this fruit!
So awesome to watch!

Such nice teeth!
I had my first Lion's Mane harvest last week on Friday night. I got a 7.9 oz harvest off one sawdust block that I inoculated in early June. The teeth length was awesome on that cluster. I have 4 more blocks in my tent right now and two have some large clusters right now, and they are a slight pink color! The other two bags are just starting to show clusters but I think I will be having another harvest this weekend! So excited and I love watching these guys grow.
North Spore
Thanks for the great review, Tallia! We really appreciate your support.

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!!!