Hi, Only really started doing any gardening this time last year, my strategy was to buy whatever was reduced and plant it probably planted way to much, too close. Anyway I'm in the process of tiding a patch up and would like to plant sedums. I believe they need well drained soil so have purchased grit to mix with the soil. My question is would it be OK to have then surrounded with bark or would that retain to much moisture ? Don't really want to put down gravel as it's a kind of woodland area of the garden (very small front garden).