For me this issue of clay is only for summer. there is no use at all for them in winter, inside or out, since excess moisture is never an issue inside. I really hate to have to bring plants inside in the summer because it has been wet for two weeks. Perhaps the people talking about algae buildup are referring to winter. Another thing I like clay pots for are things with massive roots or corms that want to be pot bound. When they get too big they just brake the pot themselves or with the help of a hammer.. No struggling to cut it off without damaging the roots. Frank Cooper -----Original Message----- From: Jim McKenney Sent: Wednesday, October 05, 2011 10:52 AM To: Pacific Bulb Society Subject: Re: [pbs] Clay vs plastic Mary Sue was wondering when the big concern she had about clay would be mentioned. No one has yet mentioned the big concern those of us in cold winter climates have: clay pots exposed to repeated freeze-thaw cycles crack. Jim McKenney _______________________________________________ pbs mailing list pbs@lists.ibiblio.org http://pacificbulbsociety.org/list.php http://pacificbulbsociety.org/pbswiki/