The main job of our compost is to grow certified organic mushrooms. When were done with that it's ready for your garden or farm. Our mushroom compost is very special because we pasturize the compost prior to growing mushrooms so there are no weeds! This makes our compost great for mixing into your soil in the fall and winter season or top dressing your trees or plants while they are growing in the spring and summer to give a nitrogen boost and kill any weeds competing with what your growing.