We have so much discussion on various forums over what is sand or grit or gravel; but rock mulch! How large is that and what shape? or is it just another name for some of the 3 above. Pea gravel. What I believe is called shingle in the U.K. Years of applying the “annual approved topdressing” (I read a lot of Graham Stuart Thomas), the raised beds have become mostly gravel, with some clay. Here, we mulch with shingle, but only after a hailstorm. Bob Nold Denver, Colorado, USA _______________________________________________ pbs mailing list pbs@lists.ibiblio.org http://pacificbulbsociety.org/list.php http://pacificbulbsociety.org/pbswiki/