Description
Sterilized Grain Jars for Mushroom Cultivation
Our sterilized grain jars offer a convenient, ready-prepared grain option for mushroom cultivation. Boise Mushroom Company prepares each quart jar with properly hydrated grain and then sterilizes it before sale. Therefore, you can skip the time-consuming process of measuring, hydrating, loading, and sterilizing grain at home.
Choose from Milo, Wheatberry, Oats, or Popcorn to match your preferred cultivation method. Each grain provides a practical medium for expanding compatible mushroom mycelium. After colonization, growers can transfer the grain to an appropriate bulk substrate or fruiting medium.
Choose Your Preferred Grain
Milo: This small grain provides numerous individual inoculation points throughout the jar. Because of its size, many mushroom growers choose Milo for a variety of cultivation projects.
Wheatberry: Whole wheat berries offer another traditional option for mushroom cultivation. In addition, their medium size provides a useful balance between individual kernels and overall grain volume.
Oats: Whole oats work well for many grain-based cultivation methods. Furthermore, growers can easily distribute colonized oats when preparing them for the next stage of a project.
Popcorn: Large kernels make popcorn easy to handle and visually inspect. As a result, both new and experienced mushroom cultivators may find popcorn straightforward to work with.
Prepared and Sterilized in Boise, Idaho
Boise Mushroom Company prepares each quart grain jar in Boise, Idaho. First, we hydrate and prepare the selected grain. Next, we load the grain into the jar. Finally, we sterilize the completed jar to create a clean starting point for your cultivation project.
Proper sterile technique remains important during inoculation. Therefore, work in a clean environment and use appropriate procedures when introducing your selected mushroom culture.
Multiple Grain and Pack Options
Our sterilized grain jars come in 1-pack, 3-pack, and 6-pack options. Consequently, you can choose a quantity for a single project or prepare several inoculations at once.
For more cultivation materials, visit our Grains, Substrates & Grow Bags collection. There you can find additional mushroom growing supplies from Boise Mushroom Company.
Product Details
- Quart-size sterilized grain jars
- Choose Milo, Wheatberry, Oats, or Popcorn
- Available in 1-pack, 3-pack, and 6-pack options
- Hydrated grain prepared for cultivation
- Multiple grain choices available
- Convenient alternative to preparing grain at home
- Prepared by Boise Mushroom Company
- Made in Boise, Idaho
Important: Always use appropriate sterile procedures during inoculation. Also, remember that cultivation requirements vary by mushroom species, culture, substrate, and environmental conditions.







