Mountain Magic's Natural Mushroom Compost is an excellent soil amendment that's filled with organic ingredients. It consists of top grade, screened ponderosa pine and Douglas fir mark and harvested mushroom median. Mix it 50/50 with existing soil and watch your flower gardens and planters flourish! It aids in moisture retention and will also add plenty of nutrients to the soil. | Mountain Magic Natural Mushroom Compost | Size 1 cu ft