Could I use blood meal for circles or ADD my own blood to it? I am curious if blood meal can be used in magic I asked around no answer
I can definitely see it being used in magic, especially as a substitute for graveyard dirt to avoid the legal consequences if you do not buy it
Yes it can be used. You may want to check if it is a preferred method of said entity though.
If I’m going to use any particular thing in a ritual, I would look at what it’s mundane properties are first of all. That will give you a clue as to its esoteric properties. As above, so below. Once you have an idea of its properties then you will have a better idea if it belongs in a particular work or not