I think so?? Don't know though? Chris?? (Vicky, Chris is in WI, and is either Z5 or 4?) The one thing these gals of mine seem to like is chicken grit! Lynn kept writing about it, and I was hesitant, and then finally tried it, and I just keep going back for more! I'm using it for all my succulents and the seem to respond to it well! I use the smallest kind (so its actually called "Chick grit" or #1)
My semps went from looking mediocre to "glowing"! within a week or so after top dressing with this stuff!! Amazing
