They look confused as to what season they are in. Maybe try some in the ground against a wall? They will take considerable frost, though they might suffer leaf damage. Peter Uk On Tue, Jan 21, 2020, 3:20 PM Arnold Trachtenberg via pbs < pbs@lists.pacificbulbsociety.net> wrote: > I've had these Arums for a number of years. A. palaestinum, A. korolkowii > and an Arum I was given by a colleague in Puglia, Italy. > The soil has been changed and pots sterilized more than once. > I feed with an organic fertilizer Down to Earth which is a blend of > organic components. > I have them under some T-5 LED lights in a cool greenhouse not below 45-50 > F. > Any suggestions would be most appreciated as to how to correct this > condition. > > > _______________________________________________ pbs mailing list pbs@lists.pacificbulbsociety.net http://lists.pacificbulbsociety.net/cgi-bin/…