Powdered gypsum increases the pH in mushroom growing substrates. It also enhances yield and is full of minerals and trace elements for the mycelium to thrive. Gypsum should be mixed at a rate of between 2 and 5% of the dry weight of your substrate.
Purchase 3kg for growing Fire pit Black Morels.
Powdered Agricultural Gypsum for Mushroom Cultivation
£6.00Price
