Organic Shiitake Mushroom Plug Spawn

100 plugs
$19.99
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USDA Certified Organic

USDA Certified Organic

Trusted by 350K+ Growers

Trusted by 350K+ Growers

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Money Back Guarantee

Unlock the rewarding experience of cultivating your own gourmet mushrooms with North Spore's Organic Shiitake Mushroom Plug Spawn. Specially developed for outdoor growers, this beginner-friendly spawn allows you to transform logs and stumps into thriving habitats for nutritious Shiitake (Lentinula edodes) mushrooms.

Our plug spawn offers a traditional and effective method for establishing a long-term mushroom patch, making outdoor cultivation accessible to all. The convenient plugs simplify inoculation, guiding even novice growers toward a successful harvest.

Committed to quality and sustainability, North Spore provides USDA Certified Organic plug spawn. This ensures you are starting your mushroom project with pure, high-quality genetics free from synthetic inputs, aligning with natural growing practices for your garden or homestead.

Shiitake mushrooms are celebrated for their rich, savory flavor and meaty texture, adding a gourmet touch to any meal. Beyond culinary appeal, they are a nutritious addition to a healthy diet, known for their beneficial compounds.

Expect medium-to-large, brown, umbrella-shaped caps to emerge, typically fruiting from summer through fall. These resilient fungi integrate beautifully into shaded outdoor spaces, providing a consistent and rewarding harvest for years to come.

North Spore, built by mycologists, is dedicated to empowering growers with expert-backed products and comprehensive knowledge. Explore our growing guides for detailed instructions and tips to maximize your yield.

Tools you'll need

To grow on logs using plug spawn, you will need:
Drill Bit
Sealing Wax
Wax Daubers

To calculate how much spawn you will need, click here.

Cultivation

Ideal project size: Plug spawn is ideal for smaller projects of 1-10 logs, though some log cultivators will use them for larger projects.

Click here for full instructions

Inoculation

Growing shiitake mushrooms works best with the log method. It will take at least 12 months of colonization before mushroom production, and shiitake tends to fruit throughout the summer to fall growing seasons and after rainfalls. Preferred wood species are oak, maple, or beech. For the full log compatibility chart, click here.

How to grow is more challenging than finding the perfect log, though. Growing mushrooms using the log method requires dedication and patience whether it’s shiitake or any other type. If you use plugs, you must drill two-inch-deep holes on the log. Then, you insert the plug spawn in the holes.

Plug spawn is a piece of hardwood inoculated with spawn. After inoculating the plugs, keep the wood hydrated, and don’t put it in windy areas. More importantly, don’t stack spawn logs like you would firewood. The spawn needs air, space, and sunlight to grow.

Storing

If you don't plan to use within 3 weeks, you may refrigerate the plug spawn for up to 6 months.

Cautions & Considerations

• 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.

• Aside from being kiln dried, our wooden dowels are not treated in any other way.

FAQs
Cooking

Shiitake mushroom has a meaty texture when cooked and is good for drying and reconstituting in winter soups. It pairs beautifully with tamari, ginger, and garlic and can bring needed umami flavor to various dishes.

Get the Right Tools
Emboss-o-tag
Emboss-o-tag (+$15.99)

Keep track of your species

Log Inoculation Drill Bit
Log Inoculation Drill Bit (+$21.99)

The perfect size for our plugs

Angle Grinder Adapter
Angle Grinder Adapter (+$54.99)

Allows 4x faster drilling

Log Sealing Wax
Log Sealing Wax (+$3.50)

1/4 lb - enough for 100 plugs

Wax Daubers
Wax Daubers (+$2.99)

4-pack

Frequently Asked Questions

After inoculation, most logs take 6–12 months before producing their first flush of mushrooms. Colonization depends on temperature, moisture, and wood type. Once established, a log can fruit for 3–7 years.

Always use freshly cut, disease-free logs. Old or rotting wood may contain competing fungi or be too dry for successful colonization. Ideally, inoculate within 2–4 weeks of cutting.

Plug spawn (wooden dowels) is easier for beginners and ideal for smaller projects. Sawdust spawn is faster to colonize and more economical for larger batches or commercial growers.

Store logs in a shady, humid area close to the ground. In dry or hot weather, occasional watering or soaking can help maintain moisture. Avoid full sun or windy spots, which can cause bark cracking.

Cluster of brown-capped mushrooms with long, light-colored stems against a white background.

Your Trusted Source for Premium Mushroom Growing Supplies

Whether you’re growing mushrooms at home, in your garden, or at a commercial scale, we offer everything you need to cultivate success. We start with the highest-quality OMRI-listed ingredients, mix them in our state-of-the-art facility, and inoculate them in our custom-built lab, so you can rest easy knowing your product will yield the best results.

Reviews

  • 5 stars: 128 (95%)
  • 4 stars: 6 (4%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 1 (1%)
K
Kristen Lehmann
double-spaced diamond pattern experiment

First time with North Spore…affordable to experiment with. I ordered plugs of lion & shiitake, easily drilled, daubed wax sealed, piled in shady moist woods myself. LOVED the prompt online support, and appreciated DIY booklet including optimal times to harvest logs. I'm experimenting with 8” x 4” diamond pattern ( so that’s DOUBLING the recommended spacing of 4” apart, 2” between rows). My Goals =1. avoid competing mushroom crowding. 2. inoculate more logs to try some in beech, oak, and maple. -Kristen in NH

Thanks so much for sharing, Kristen! Please reach out if you ever need anything.

J
Jason Keene
Great

Shiitake mushrooms are great. I love them.

J
Jason Keene
Great spawn

These plugs, work wonders mushrooms I have

I
Ian Ruff
These work!

I've had good success with these plugs. I've inoculated sweet gum logs multiple times and they fruit fairly consistently after deep rains in spring and fall in Upstate South Carolina.

We're so happy to hear everything is working out for you, Ian! Thanks for sharing.

t
thomas dupree
LOVE

Thank you guys! I am excited to do these ones again!

J
Jessie
Will buy again

I was very impressed with these!

E
Erin Muise
Great product

My friend inoculated six sugar maple logs for me using your product. In less than two years (earlier than promised) I had delicious shiitake shrooms.

That's so exciting, Erin! Thank you for your review!

J
Jason Keene
Great mushrooms

These mushrooms are very good if I was you, I’d buy them and try

Thanks for the great review, Jason!

S
Sue Trueman
Optimistically waiting for mushrooms to grow

Instructions were easy to understand and follow. Plugs went in easily. Now we’re just waiting for spring!

Thanks for your review, Sue! If you need help with anything, please reach out.

J
James Sides
Ease of Doing

found a Red Oak with limbs perfect size cut recommend number piece of cake !

We appreciate you taking the time to leave a review, James! We’re so happy you’re enjoying the experience so far!

J
Jason Keene
Great mushroom mushrooms

Logs are producing great several years of mushrooms ahead

S
Sebastian Estevez

Next definitely getting the tool and ditching the plugs. They take forever and break easily.

Happy with the product though.

J
Jason Keene
Loved it

Very good

k
kristina
Easy to follow instructions

Former experience has been seven years of fresh shiitake mushroom using plug spawn. It was time to retire my former shiitake logs, production had decreased. I will shred the old logs and use them as mulching. Now I look forward to several more years of fresh mushroom from the logs inoculated with Shiitake plug spawn 1 month ago. Great product, decent price, easy to follow instructions. I only recommend North Spore mushroom spawn products.

Thanks so much, Kristina! Happy growing!

M
Matthew Thomas
Logs of fun

This was my son and myself's second round of logs. He is 5yr I drill the holes and he taps in the plugs..our first pile is still producing 3yrs later. did second pile last yr. grew several other mushrooms. all quality spawn..thanks north spore great work

Love to hear how you are inspiring the next generation of mushroom cultivators! It really warms our hearts. Thank you so much for sharing!

K
Katrina Solomon
Plug and wait

Plugs looked well colonized. Five hundred plugs in place, now for the long wait for logs to colonize.

Thanks so much, Katrina! We really appreciate the kind review.

J
Jason
Shiitake plugs

Looks great can’t wait to use.

Thanks for sharing, Jason! Our team is here if you need anything.

T
Terrence Ryan
Gift items

We haven’t used the shiitake gift packs yet. These were Christmas gifts and the weather is very cold now. But soon.

What great gifts, Terrence. Feel free to reach out to us with any questions you might have along the way!

L
Lisa McGrath
Great expectations

We are thrilled to try these mushrooms! They were so easy to place in our oak logs that we ordered 3 more packets! One for our daughter and 2 more for our farm! Check in to Dark Wolf Farm next year for results!!!

Awesome, Lisa! Thanks for taking the time to share your experience.

C
Carl Kagawa
“A watched pot never boils”

Ordered 200 shitaki plugs and arrived ahead of time and well packaged. It was a great project collecting logs, drilling and putting in the plugs. I used a glue gun instead of hot wax and hope it will work. The logs are now stacked outside and the glue gun spots over the plugs are holding up well. Now I have to patiently wait the 6-12 months to hopefully get results. I learned that checking every other day is excessive and not productive.
I have ordered and grown in bins your oyster mushrooms earlier this year and got a lot of mushrooms. I am trying to move up in my mushroom growing. It has all been a great experience. I would give the current experience 5 stars thus far but I am waiting to see what I can grow. Thanks, Carl

Thanks for taking the time to leave a review, Carl! The team is here to help in case anything comes up.

S
Stuart Arceneaux
Fast and simple log kit

This was my 2nd kit. The drill bit and wax applicator made my shiitake inoculation very simple and fast. I’m excited to see what we get next spring. I’m already thinking about what to get next!

Awesome, Stuart! If you need help with anything, please reach out.

H
Hiroshi Morimoto
Successful Shiitake Mushroom Plig Inoculation

It was straightforward to inoculate the plugs in oak logs. I cannot wait to have shiitake growing in the logs next spring (I tried the shiitake sawdust last year and successfully had shiitake on oak logs in May of this year).

B
Bethany
First Flush

I just harvested my first flush off of my Shitake log. So exciting!

Congrats on your awesome harvest, Beth! Thanks for your review.

G
Gregory Lynch
Plug Spawn

I haven’t cut my wood for these yet, but the plugs look great. Use the plug calculator so you have an idea how many you need. Go with sawdust for larger projects. Do yourself a favor and get the grinder attachment either here, or elsewhere (for cheaper)

M
Mayra

no recommendation for the product

M
Matthew Bolduc
Fun!

Plug spawn arrived in great shape and covered in mycelium. The family and I had a great day inoculating several recently downed Maple trees from a storm. Now we wait!

We really appreciate you taking the time to share your experience, Matt! Our team is here to help if you ever need anything.

R
Robin Robertson

Great spawn wish there was more options for ordering beside 100 or 500

Thank you for the feedback, Robin! We'll definitely consider offering other quantities.

L
Leeroy
Soo many shittake

Using one bag of plug spawn I've had 2 flushes (sometime 3!) of mushrooms consistently for the past 4 years. The process of plugging the logs was easy, using a drill attachment on an angle grinder worked much better then using just a drill.

Awesome, Lee! Thanks so much for sharing the beautiful photos. Please reach out if you ever need anything!

H
Heather Merrell
Excellent product

So far so good. Incubation working well. Getting ready to grow them outside!!

Thanks for sharing, Heather! If you need help with anything, please reach out.

J
John
Great product

I purchased several hundred of these plugs and inoculated some oak logs. Colonization is happening faster than expected. Excellent product. I highly reccomend.

We wish you the best of luck with your grow, John!