oyster shell

I’m currently using 70% Vermont compost fort vee to 30% nectar of the gods #8. I have the dragonfly earth medicine radiant green super brew blend I plant to feed my plants throughout. I plan to use rove beetles and let them establish themselves in my soil prior to use, lady bugs during along...

Hi, It seems to be a bit of a problem to get oyster shell flour in my country, although everybody is eating oysters... I have found oyster shell grit, which is used for chicken. Is it interchangable?

I'm trying to leave the lime out of my next soil mix, I don't really need the pH raise. Since I won't have the lime I believe I'll need something for calcium and magnesium right? I hear oyster shell is a good source of calcium so I picked some up. Is Epsom salts my only source for magnesium...