Start making your own grain substrate for mushrooms and save money

For one-time growing you can start with pre-made sterile jars and bags, however, ready-to-use solutions usually have lower quality than substrate made by your own.

Below you'll find Amazon products for DIY grain jars for mushrooms. Most of the items can be used multiple times. Hence you can save money by making unlimited spawn jars (or bags) in long term run. Moreover you can prepare fresh substrate any time you need.

The most expensive device in this kit is Pressure Cooker (PC). But you can use it hundred times for thousands of jars.

Pressure cooker is your best investment in this hobby. It is an investment in yourself increasing your ability to have perfect quality substrate, more opportunities for experiments, less fear of fails and greater success in mushroom cultivation overall

Btw, pressure cooker is an amazing tool for making healthy food and/or canning.

Jars and lids can be used as many times since they are not broken. I prefer to use heat resistant plastic lids (5PP), they may work for longer, it's personal preference. Try what works best for you.

Some components (like injection port) are also reusable.

Some parts/materials are very cheap to replace. For instance, RTV silicone or air filter.

The only components you have to buy each time are: grain of your choice, vermiculite and pinch of gypsum.

Time consuming for DIY grain jars

You can start with the most simple recipes for newbies to be sure in result: Brown Rice substrate, or BRF (Brown Rice flour substrate, or No Soak No Simmer Millet. They take 10-20 minutes for preparation and 2-2.5 hours for sterilization in PC.

Other recipes takes 30-60 mins for preparation (depends on grain) and 2-2.5 hours for sterilization in PC.