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Organic Blue Oyster Mushroom Sawdust Spawn












Skill level | Beginner |
Grow location | Outdoors |
Spawn shelf life | 6 months (refrigerated) |
Bag weight | 5.5 lbs |
Incubation - beds | 2-4 months |
Incubation - logs | 6-12 months |
Fruiting temps | 55-75°F |
Blue Oyster (Pleurotus ostreatus) is a fast substrate colonizer with a strong bluish-gray hue. It produces richly umami mushrooms with a soft, meaty texture that pairs well with most dishes. Oyster mushrooms are great for beginners because they colonize quickly and are reliable producers. As our most productive oyster strain, they are reliable, cold-tolerant, and fruit prolifically in early spring or late fall. They are also ideal for commercial cultivation, especially when grown on straw.
Recommended use:
- Blue oyster sawdust spawn can be used for log projects and/or outdoor beds, containers, and buckets.
- Sawdust spawn is ideal for larger log projects of 10 or more logs.
- This is not a mushroom grow kit. Blue oyster sawdust spawn must combined with a substrate (like straw) or used in log inoculation 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 cultivation, inoculation, and storage guides.
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To grow on logs using sawdust spawn, you will need a Log Inoculation Tool, Log Sealing Wax, and Wax Daubers.
For larger log projects you may also want to purchase an Angle Grinder Adapter and specialized 12mm drill bit.
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Click here to download our pamphlet on growing mushrooms on logs and totems.
Click here to download our pamphlet on outdoor bed cultivation using sawdust spawn.
Click here to learn how to grow in buckets and containers.
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Logs:
Blue oyster mushrooms work well with the log, stump, and totem methods. Colonization is fast and may start producing in 4-12 months, though fruiting is dependent on environmental triggers. They fruit best in the spring and fall and prefer softer hardwoods such as poplar and aspen. They will also work on maple.
Outdoor beds:
Click here to download our pamphlet on outdoor bed cultivation using sawdust spawn.
Containers:
Click here to learn how to grow in buckets and containers.
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If you don't plan to use your blue oyster sawdust spawn immediately, you can refrigerate it for up to 6 months.
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Blue oyster mushrooms can easily replace button mushrooms in most recipes and pair well with many cuisines and flavors. Like all oyster mushrooms, they retain water and may develop a viscous texture when under-cooked. If you prefer a firm or dryer texture, continue to cook Oysters until their liquid has reduced and cooked off and they begin to brown.
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All our spawn is made using organic cultures from our own culture bank. Our sawdust spawn is handmade from a blend of locally sourced, all-natural, organic, and non-GMO woods and supplements from farms and forests 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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Loving the convenience of fresh mushrooms
This has been a super fun and easy DIY experience. Have been completing the steps as a family and getting my 6 year old involved. He's excited to have a chore that's accessible to him (misting the mushrooms). We just got our first crop in and will be tasting them in dinner tonight. Would highly recommend growing mushrooms and North Spore has been top notch.

Blue Oyster
Great, fruited after 2 weeks.

Fantastic Quality
North Spore products are amazing. So far I've succeeded with yellow and regular oyster mushrooms. I hope my Shiitake grow from the log in a year or so. I'm very satisfied!

Great product!
I am a novice and this was my first time growing these, let alone any mushroom. Went the bucket route with sawdust spawn. So incredibly easy! Started indoors in late summer then moved them outside when the days got cooler. I’ve had two blooms so far!
North Spore
Incredible job, Michael! Good idea moving them outdoors for the cooler weather, enjoy!

Amazing and so fun!
This was so fun and rewarding to do! So far I've gotten 2 lb 14 oz with the first flush between two buckets that I did the straw and spore layering method in. Definitely recommend to anyone wanting to try it!

Amazing and so fun!
This was so fun and rewarding! I have gotten so many oyster mushrooms from doing the bucket and straw method. Definitely recommending this to anyone who is thinking of trying it. Do it, you won't be disappointed!

good fun in New England
we are on our 3rd flush with these guys! I decided to try growing mushrooms as a winter project since I couldn’t be out in the garden. I had no idea what I was doing — tried growing indoors but I think I missed a step. Then I watched some of the North Spore educational videos and realized I could use my spawn outside. It’s been fun learning and experimenting. Thank you!

Blue and Golden mushroom spawn
I ordered the golden and blue oyster sawdust spawn. It performed spectacularly. I grew in buckets first, then after the flush, I used the spawn in beds prepared earlier. Now the mycelium is doing fantastic and growing very well. I fully expect to get another huge flush in a month or so. Great quality spawn. And excellent service and education from the company.

Blue and Golden mushroom spawn
I purchased two bags of Blue and Golden sawdust spawn a few months ago. I'm a first timer at this. I followed the directions and boy did I get a delicious surprise. I used the bucket method with soaked aspen shavings, In two weeks I had mushrooms pinning all over the buckets. And 8 days later I was harvesting several pounds of incredible oyster mushrooms. We had enough to can 4 pints also. After the harvested buckets, I took the mycelium and planted with fresh substrate (straw) in a 4x6ft garden bed. I keep them moist every day, and man is the mycelium taking over. It looks like I'll get another huge harvest pretty soon. Can't wait. On another note, I haven't seen a company so dedicated to helping a customer become successful. My email questions are always answered within 24 hrs, (but usually a couple hours) every time. They truly want you to succeed. I for one am sticking with North Spore for good. Thank you folks for all that you do to help us. Joe Christiansen, Daphne, Alabama

Growing Great in Salt Lake!
Started two mushroom beds outdoors for the first time this past May, both Blue Oyster and Wine Cap and the oysters were far and away the winners! I made a roughly 3x3 ft bed with chopped straw, about 6inches thick. I soaked the straw for a few hours when I built the bed, and sandwiched the sawdust spawn with the straw. Being in a very arid climate, I was unsure how it would go, but I kept some burlap coffee sacks on top to help maintain moisture, and angled my garden sprinkler to hit the bed 2-3 times a week. After no natural rain for about two months, a storm came through in July and I had my first flush! Over the past 4 months I have had 1-2 flushes a month, with about a half pound each time! Can't wait to see if/how they overwinter. Will definitely be growing these in the garden again.