Hi, Solar greenhouses have come up here before. There's a long running discussion in 2012, provoked by the appearance of a "new book" on the subject: https://pacificbulbsociety.org/pbslist/2012-June/… Fall and Winter Bloom in the Solar Greenhouse Paperback – 29 May 2012 by James L. Jones (Author) -- David Pilling http://www.davidpilling.com/ _______________________________________________ pbs mailing list pbs@lists.pacificbulbsociety.net http://lists.pacificbulbsociety.net/cgi-bin/… Unsubscribe: <mailto:pbs-unsubscribe@lists.pacificbulbsociety.net>