The EASIEST Method to Grow Oyster Mushrooms

Oyster mushrooms are one of the best types of mushrooms a person can start growing at home! They’re one of the easiest strains of mushrooms to grow, and can also grow on a variety of substrates such as straw, sawdust, coffee grounds, logs, and more. They’re a low calorie, high protein super-food with many medicinal properties (if prepared properly).

For a list of items used in the steps below, please refer to the mushroom kit I put together:

Step 1 – Substrate Preparation

“Substrate” is the the growing medium in which the mycelium will consume as the organism matures.
Oyster mushrooms will grow on many types of substrates. The substrate(s) used in the following videos were made with oat grain and straw.

Making Oat Grain Substrate

  • Rinse then soak grain for 12-24hrs.
  • Bring water to boil on stove. Lower heat and simmer grain 10-20min.
  • Strain grain and steam dry the exterior of the oats.
  • Add grain to oz canning jars w/ 4-5 FAE holes in lid, or custom self-healing injection port w/ FAE hole.
  • Add transpore (micropore) tape over holes, and cut aluminum foil to fit over lids.
  • Place separator in bottom of pressure cooker and add water until covered.
  • Add jars and pressure cook at 15psi for 90 minutes.
Watch the full step-by-step process here:

This step is usually what make most people apprehensive. Many still fear pressure cookers despite the improved safety features newer models now have. Just read and follow your PC’s instructional manual and you’ll be fine. If you’d like to skip this step (and cost), or if you first want to see if mushroom growing is for you, there are vendors available to purchase sterilized substrate jars and kits to have shipped directly to your house, ready for inoculation.