Description
Healthy gourmet mushroom mycelium colonized rye grain spawn. Perfect for anyone looking to do grain to grain transfers or skip the inoculation process and get right to growing!
Important Product Notes:
- Spawn will be broken up for transit, to prevent over colonization.
- Use right away, mycelium needs to be mixed with substrate asap
- Cleanliness is extremely important for mushroom cultivation.
- Choose a clean work area.
Colonized Spawn Bag Instructions:
- Mix spawn with a hardwood based sterile substrate.
- Allow colonization of substrate for 7 to 14 days.
- Once the substrate bag is full colonized. Push to fruiting by cutting a few small X’s in the bag near where mycelium has fully colonized. Mist the X’s using the fine mist spray bottle.
- After 7 to 14 days in fruiting conditions, mushrooms will start to grow.
Why Choose an All-In-One Grow Bag:
Our colonized mycelium spawn bags are full of healthy commercially viable mycelium to give you the best growth possible. These bags help growers and hobbyists save time by skipping sterilization, inoculation, and spawn colonizing.
Guarantee:
We guarantee all of our products will arrive damage-free and contamination-free . If they don’t we will refund you or send you a new package.














I have picked up products from Flatland Fungi multiple times. Quality of product (grain spawn) was terrific and colonized the substrate with no problems! I am lucky to live close to their lab. Communication was timely, costs are more than reasonable, and inventory is diverse. I will continue to order in the future!
Worked perfectly
Mushrooms are already growing in my buckets.
Highly recommend