Seems to rely on the "nominal" USDA zone range for the plants. Seems I cannot grow most of the Trilliums because I am too warm, here, near Oxford. Brian Whyer, UK -------------------------------------------- On Tue, 15/1/19, David Pilling <david@davidpilling.com> wrote: Subject: [pbs] Plant hardiness database To: "Pacific Bulb Society" <pbs@lists.pacificbulbsociety.net> Date: Tuesday, 15 January, 2019, 12:15 Hi, Someone wrote to me "I have developed a database containing 30.000 species including their hardiness data which will simply be mapped and compared to the hardiness zone the user of this software is at and instantly provide results." See: https://asklepios-seeds.de/gb/… There is a commercial aspect to this since he is a seed vendor. -- David Pilling http://www.davidpilling.com/ _______________________________________________ pbs mailing list pbs@lists.pacificbulbsociety.net http://lists.pacificbulbsociety.net/cgi-bin/… _______________________________________________ pbs mailing list pbs@lists.pacificbulbsociety.net http://lists.pacificbulbsociety.net/cgi-bin/…