How to Grow Maitake Mushrooms

Obtain maitake mycelium. Be certain that you purchase the spawn from a source that has thoroughly tested the strain as much maitake spawn does not produce fruit. You can find a list of retailers by clicking on the first link under References below.

Prepare the growing substrate. Maitake grow best on a sawdust-based substrate. The sawdust chips should be of varying sizes. Prepare a mixture of 75 percent sawdust, 23 percent wheat bran, 1 percent sucrose and 1 percent gypsum. Mix well.

Test the pH of the substrate. It should be acidic, between 5.5 and 6.5. This substrate should be kept moist at all times. Add maitake mycelium to the substrate and mix with a sterile spoon.

Add 1 to 2 inches of potting soil on to the top of the substrate that will serve as a casing. Casing helps to support the fungus as it matures. Cover with the cultivation bag and allow to progress through growth stages. It will take approximately one year for maitake to fully mature.

Regulate the temperature, humidity, airflow and circulation throughout growth. There are three stages of growth: spawn run, primordial and fruiting bodies, each requiring slightly different conditions. For a chart on these, see the third link under References below.

Harvest prior to visible deterioration and after the mushroom has evolved fully through the fruiting body phase, evident by a brownish-yellow color and cluster flower appearance. While supporting the fruit, cut off the base and store in the refrigerator for up to two weeks.