Reporting from another weather extreme for R. coulteri, for me spring was the time to plant, because in my semi-continental European climate, the winter is the difficult season. I've planted mine in spring 2017, got one flower in that first year, no special summer water treatment. In winter, it stayed above ground throughout the rather warm January 2018 but froze to the roots in February ( -11°C). Last summer was extremely hot and dry for my area, nearly no rain from April to September and /average /maximum day temperatures 28°C in June and above 30°C in July and August (absolute max 38°C). R. coulteri received the same additional water as the rest of the garden, e.g. a Datura right next to it. it grew to about 80 cm height and width, bigger than in the 1st year, but no flowers. For now, some leaves are still on the plant, but we've had only -4.3 °C up to now, so status for my R. coulteri ist still: experimental. I really hope to get it to flower next season. -- Martin ---------------------------------------------- Southern Germany Likely zone 7a Am 02.01.2019 um 17:00 schrieb Jim Barton: > Jim Barton > Like many poppies R. coulteri do not like their roots disturbed. My own plants took several years to get them started some survived some died. Once they survive the first summer it took several years to flower abundantly. Here west of Modesto they survive on rain only and can take over the place without some effort to contain them. In hot summer climates I would recommend planting them at the beginning of the cool season so the roots can become established before hot weather. > _______________________________________________ > 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/…