Horticultural grade vermiculite
I purchased vermiculite for my first square foot garden. I had a tough time locating a source that carried it in 4 cf bags. Now I'm worried because I read a post from someone who stated that they bought the wrong vermiculite. Can someone ease my worry? Is horticultural grade acceptable for Mel's mix? On the package, neither coarse or medium is checked off, but in perm marker, someone wrote "VC". I assumed that to mean vermiculite - coarse. Help.