Benefits of spent mushroom soil (compost)
I've just read a great article from Penn State about improving turf by using spent mushroom soil (SMS).
I can get SMS locally, both fresh and aged (6-9 months). I can get fresh SMS at only $4/cubic yard in 40 yard trailer only, or I can get aged SMS for $10/cubic yard. Has anyone used fresh SMS on their lawn? Is it safe to put fresh, straight out of the mushroom factory, on your lawn? I believe they do sterilized both the fresh and aged.
I have an acre lawn and would use the fresh SMS to put a 1/3 inch layer on the lawn to improve the soil and as part of an overseeding project this fall.