i know it's good for shrooms, i'm getting it from a shroom field!Its a good additive to soil, and a great medium for mushroom growing.
I find to much crap actually ruins the soil when added in large dosages. Its great in small doses, especially when the horse was fed hay as it won't all digest and allows a break in the crap for it to breath. To much though and it just becomes a thick clump of shit "sponge" haha. Can't argue that you could grow straight in it though, as thats a fact. I just find its overly resistive to roots and drainage compared to say FFOF. Really not sure how much I mix up since I just eye it for the most part on a big tarp, but probably filling an entire 5 gallon bucket id add like 3 or 4 cups.yes yes and yes... if its leached of all the amonia from sitting in piss and all that ... it hold water very well ...and its very spongy in texture. you will notice that you dont have to even mix it in much you can almost plant directly in the horse shit if its old horse shit.