I have access to quality mushroom compost as well as composted horse manure. I am needing 12 cu YARDS of soil so I am not wanting to use a complicated amendment package.
so, if you were growing cannabis and had access to composted horse manure and mushroom compost, what ratio of the two would you use and what amendments would you add for veg and flower?
I can't give you exact advice because I just mix till the gardening gods tell me to stop lol, just know that manure and many composts are super hot, so you'll want to mix it with some plain old soil or
promix, and if you can let it sit for a while before you add the plants if possible. I would probably do like a quarter manure, a quarter mushroom compost and half plain soil. I personally add bone meal, blood meal, bat guano, a few eggshells and coffee grounds for good measure... but I have like a 200 Sq foot garden patch for my veggies and babies, so it gets spread out and it sits like a month before planting. Better to use not enough and amend with liquid nutes than to burn with super hot soil in my opinion. I mix my soil and still feed nutes weekly or bi weekly depending how they are looking. I also don't feed them for a week or so before they go outside so they can take up what's around the roots if I've made it too hot.
