- Home
- Coco Coir Mushroom Substrate & Casing Layer
Coco Coir Mushroom Substrate & Casing Layer








Features | Non-GMO, biodegradable |
Coco coir is a non-sterile substrate that provides many benefits to the mushroom cultivation process. In addition to moisture retention, the porous structure of coir material enables excellent gas exchange, water supply, and is highly resistant to contaminants. It is primarily used as a casing layer in monotubs or as a substrate additive. However, it can also be used in garden beds as an alternative to peat moss.
How to use:
Coco coir should only be added to fully-colonized substrate covered in mycelium with pins beginning to form. Only a thin layer of coco coir (1/4 to 1/2 inch) is necessary.
Pasteurizing coco coir:
Coco coir is naturally resistant to bacteria. However, some users prefer to pasteurize it. Should you choose to do so, we recommend steam pasteurization or a water bath at 180 degrees for 1-2 hours. Once pasteurized, squeeze out excess water and allow to dry before use. (Latex gloves recommended.)
About coco coir:
Coco coir is made from coconut husks, is biodegradable, and is a 100% renewable resource, It also has traces of Magnesium, Calcium and Nitrogen that contribute to the growth of mushrooms.
Storage:
Coco coir is best stored in a cool, dry place. Because it can easily absorb moisture, we recommend storing in food-grade, air tight containers.
Please note that 30 lb bags of coco coir are not eligible for free shipping.
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!

Phenomenal
North Spore products are top knotch.

Excellent quality
Excellent quality just like every other item I have purchased from North spore.

Coco Coir
Shipping times were as expected, and the Coco Coir was of high quality as everything that I have ordered has been thus far. Good price too compared to other places that I looked. Highly recommend to friends and family.
Coco Coir
Shipping times were as expected and the Coco Coir was of high quality as everything that I have ordered has been thus far. Good price too compared to other places that I looked. Highly recommend to friends and family.

Outstanding!
This product comes ready to use hassle free! Last bag I ordered had an issues, I contacted North Spore right away, and they had a me taken care of that very same day! Outstanding customer service!

My first time!
Thank you North Spore for your attention to detail and for sharing your knowledge. This is my first grow, I have decided to go with the monotube design, I modified North Spore's concept a little, with automation. Since the environment is now active and controlled, I do not see the need for 4" vent holes. I experimented with several sizes and found 10 1" holes, 3" from bottom works very well. North Spore used positive presser when ventilating, vacuum is more efficient. I bought the 'INK BIRB' Humidity Controller. The INK BIRD has two output ports, one called humidify and the other dehumidify, I plugged the fan into the dehumidify and now have sequenced controlee over both events. In my initial experiments I realized this was necessary for accurate controle, the humidity in my tubs varies by 0.5%, a decent delta. Being a retired Biomedical Electronics Engineer with emphasis on research, I did my part! Finding more information on the North Spore site than all other sites combined. Clearly North Spore has been doing this for quite sometime. Equally, the products North Spore have developed for mushroom production is impressive. I realize this is a hobbies for me, patients and cleanliness must be observed. I will post my results good or bad, if I fail it would be due to oversite, Since I have all bases covered, I do not see a potential for failure but you really never know what the mushrooms are thinking, since I approach this from a professional view, I am confident! I would not have been able to get this far, without help from North Spore, Thank You, Robert Toth

Great for monotub
Amazing clean casing for monotub
Excellent.
Nuff said.

Great stuff!
This was the perfect topper for all the other great stuff. My whole project was a first time attempt and it worked great!

Coir coir
Excellent product! Will be ordering again!