Description
Colonized Grain Spawn for Mushroom Cultivation
Our colonized grain spawn provides a convenient starting point for mushroom cultivation without requiring you to inoculate and colonize grain yourself. Boise Mushroom Company prepares each 2 lb grain spawn bag for your selected mushroom variety, allowing you to move directly into the next stage of your growing project.
Each bag contains prepared grain that we inoculate with the mushroom culture you select. We then allow the mycelium time to colonize the grain before the order ships. As a result, these bags require additional preparation time compared with our non-colonized grain products.
Choose Your Mushroom Variety
Select your available mushroom variety when ordering. Because we prepare the spawn for your selection, availability and preparation times can vary. Most orders may require approximately two weeks before shipping to provide adequate colonization time.
The 2 lb size works well for home cultivators as well as experienced growers who want prepared spawn for small or medium cultivation projects. In addition, the sealed filter-patch bag helps maintain a contained environment during colonization and transportation.
Using Colonized Grain Spawn
Once your bag arrives, use the spawn with a suitable bulk or supplemented substrate for the mushroom species you selected. Break up the colonized grain as needed, then distribute it evenly throughout the appropriate prepared substrate. After mixing, maintain the environmental conditions required by that particular mushroom species.
Because different mushrooms have different substrate and fruiting requirements, always choose a substrate that matches the species you are cultivating. You can also browse our Grains, Substrates & Grow Bags category for additional mushroom cultivation supplies.
Prepared by Boise Mushroom Company
Boise Mushroom Company prepares mushroom cultivation supplies in Boise, Idaho. We focus on practical products for growers who want to reduce preparation time while still managing the cultivation process themselves.
Product Details
- 2 lb bag of colonized grain spawn
- Choose from available mushroom varieties
- Prepared and inoculated by Boise Mushroom Company
- Filter-patch mushroom cultivation bag
- Designed for transfer to an appropriate mushroom substrate
- Allow approximately two weeks for colonization before shipping
- Prepared in Boise, Idaho
Important: This product contains living mushroom mycelium. Preparation and shipping times can vary depending on the selected variety and colonization progress. It may take 2-4 weeks to fully colonize before shipping and will depend on the stock on hand.









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