Yesss! Mushroom compost is some of the best soils you can get! It is pre-digested by the mushrooms, so that all the organic components are readily available to
plants. It is rich in everything a
plant needs to grow, and it is biologically active, full of beneficial bacteria that will help fight disease and increase the vigour of
plants. You can mix it into your soil, or grow nitrogen loving
plants oike corn, tomatoes, lettuce, etc. directly in it, as long as it can drain well. I use bags of it and mix it with leaves and my sandy soil to make lasagna beds, and I get great results. It is perhaps the best soil amendment next to worm castings. I wish I could get a few truckloads of it!