How Oyster Mushroom Pleurotus Grow: Oyster mushrooms are generally a commercially grown mushroom. The muhrooms grow on a substrate of chopped wheat straw or wood sawdust that has been formed into large blocks wrapped in a thin plastic. The mushroom substrate is pasteurized to eliminate harmful pathogens and then inoculated with the mushroom spawn. It takes 10-14 days at the temperature 22-24 ° C for the mushroom spawn to permeate the growing medium creating thread-like hairs called mycelium . For pinning, this requires a constant temperature range 10-15° C, high humidity (90-100%) and a high content of CO2.
“Pinning” is the term used to describe shocking the mycelium into forming clumps called pins. These pins are the actual fruiting bodies of the mycelium. To shock the mycelium it is necessarily to dramatically reduce the amount of CO2 in the growing environment. Pinning takes 7-14 days.
To help the tiny mushrooms grow, diffused light is introduced to stimulate fruit development, as oyster mushrooms are “phototropic” (grows towards light).
Mist watering applications while the mushrooms are young help prevent the mushroom caps from cracking, an undesirable trait in marketing the mushrooms.
Each mushroom “block” can be harvested three times before the mycelium fruit is depleted, with a new flush of mushrooms approximately 10-14 days for 5-7 weeks.