Timmo
Well-Known Member
I have the option to buy some mushroom compost, how does it stack up against animal based?
My only experience with mushroom compost is from my non-cannabis landscaping days, 25 or so years ago. Don't take this as gospel, but my boss told me that it was sheep shit that had been used to grow mushrooms on. (Google says it can also be other things.) Apparently, after it's too spent to produce mushrooms at commercially viable rates, it gets sold as a garden amendment. I think it's supposed to be pretty good stuff. Since it's already had mushrooms grown on it, I think you can rest assured that it's sufficiently composted to grow plants in. We used it a lot when planting shrubs and trees; we'd dig a nice big hole and then mix the compost 50/50 with the native soil to refill the hole, then plant into that. We'd also rototill it into beds that needed some organic matter, usually adding about 4 to 6 inches. Everything we planted always did fine.
I just found a place that sells it in bulk for about the same price that I've been paying for the "green bin" compost with the plastic bits in it, so I'm going to buy a yard and have a good look at it here pretty soon. If it doesn't have any crap (garbage, I mean) in it, I'll probably buy a whole bunch.
In terms of how it stacks up against animal manures, I would say that mushroom compost is compost while composted manure is fertilizer (used like guano).