I live in Minnesota and have a large variety of Arum for the temperate climate. The way the leaves are curled it indicates to me too much light, too much heat. They do so much better in the shade and cool temperatures. Mine are all outside, and we sometimes get close to freeze when they are out with lots of leaves. Extra light is not necessary. Luminita On Tue, Jan 21, 2020 at 9:20 AM 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. > > This has occurred for 3-5 years. The initiate growth and around this time > of year the leaf wilt appears. > Thanks in advance.Arnold New Jersey > -------------- next part -------------- > A non-text attachment was scrubbed... > Name: Arum.disease.2020.1.JPG > Type: image/jpeg > Size: 373922 bytes > Desc: not available > URL: < > http://lists.pacificbulbsociety.net/pipermail/pbs/… > > > -------------- next part -------------- > A non-text attachment was scrubbed... > Name: Arum.disease.2020.2.JPG > Type: image/jpeg > Size: 297409 bytes > Desc: not available > URL: < > http://lists.pacificbulbsociety.net/pipermail/pbs/… > > > -------------- next part -------------- > A non-text attachment was scrubbed... > Name: Arum.disease.2020.JPG > Type: image/jpeg > Size: 328437 bytes > Desc: not available > URL: < > http://lists.pacificbulbsociety.net/pipermail/pbs/… > > > _______________________________________________ > 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/…