I have heard for years that one needs to use “silica sand” for bulb potting mixes. I wonder how “silica sand” differs from other sand. I try to find very coarse sand because it is not as likely to compact. The best stuff I found was from a stream bed. But was it “silica sand?” Isn’t sand generally a silicate mineral anyway? Dell Sent from Windows Mail _______________________________________________ pbs mailing list pbs@lists.ibiblio.org http://pacificbulbsociety.org/list.php http://pacificbulbsociety.org/pbswiki/