You should give them plenty of sun & increase watering to good solid drenching as the heat increases.. Some have success with the water tray method sitting them I'n a little water through summer... The endemic native ones here I'n Queensland live on open dark clay soil & live I'n low pockets that become sodden or even water covered for a month to three months or more at a time.. I am always fascinated when i visit the area to see plants I'n water 8" deep with healthy foliage & producing healthy buds & flowers for months.. Greater numbers of bulbs are above the water line but remain with their roots I'n water drenched soil.. Hope that helps u Steven Esk Queensland Australia ...Treats 4 Dogs... On 29/08/2014, at 8:29 AM, Diana Chapman <rarebulbs@suddenlink.net> wrote: > I have some C. lutea (luteum?) grown from seed that are ten years old and have never flowered. My C. purpureum bloom well. I let them go dry in summer. Do they need different conditions from the purple ones? > > Diana > Telos >> Hello Leo, im not so sure about International environments, but here in >> Australia in the wild, virtually all callostemma do grow from about 8" to >> 16' deep, it is correct that in these environments & depths, even in hot >> summer, the bulb stays cool... In some places they sit in a permanent moist >> zone & others are in soil that completely bakes dry.. However they >> virtually all receive summer rains in the wild & in most cases these rains >> build up to heavy rain in late summer which triggers the flowering cycle.. >> I have them growing in a hot dry environment, only planted to a depth of 6 >> to 8' deep & they are quite happy.. Mine dry out naturally in winter to >> spring when hot dry westerly winds dry everything out & its impossible to >> get moisture into the ground.. >> I hope this little bit of info helps with your experiments :) >> Steven Queensland Australia >> >> >> On 28 August 2014 23:39, desertdenial <desertdenial@hotmail.com> wrote: >> >>> When I put mine in the ground last year after 1-2 years in a pot they >>> immediately sent up inflorescences. >>> >>> Marie Ortiz >>> Tolleson, Az >>> >>> >>> Sent from my T-Mobile 4G LTE Device >>> >>> -------- Original message -------- >>> From: "Leo A. Martin" <leo@possi.org> >>> Date: 08/04/2014 9:47 AM (GMT-07:00) >>> To: pbs@lists.ibiblio.org >>> Subject: [pbs] Calostemma purpureum >>> >>> >>> >>> This spring I moved my plants to a spot where they get bright shade with >>> some very late >>> afternoon sun, and watered regularly all summer. They remained in leaf and >>> even made a >>> few new leaves. One of the plants just yesterday began pushing two >>> inflorescences. >>> >>> The Wiki says plants should be allowed to dry after leaves yellow. Perhaps >>> those in very >>> warm-summer climates, or those growing their plants in containers, should >>> experiment >>> with watering all summer, and deeper containers. >>> >>> Leo Martin >>> Phoenix Arizona USA >>> >>> _______________________________________________ >>> pbs mailing list >>> pbs@lists.ibiblio.org >>> http://pacificbulbsociety.org/list.php >>> http://pacificbulbsociety.org/pbswiki/ >>> _______________________________________________ >>> >>> >>> -- >>> >> Steven : ) >> Esk Queensland Australia >> Summer Zone 5 Winter Zone 10 >> _______________________________________________ >> pbs mailing list >> pbs@lists.ibiblio.org >> http://pacificbulbsociety.org/list.php >> http://pacificbulbsociety.org/pbswiki/ >> > > _______________________________________________ > pbs mailing list > pbs@lists.ibiblio.org > http://pacificbulbsociety.org/list.php > http://pacificbulbsociety.org/pbswiki/