Against all expectations of success, I have a few seedlings of Iris bucharica coming up in a well protected pot. Would experienced growers of this group share some success tips? I already know that deer and slug protection is essential. Keep in a pot to keep drier in winter, like Iris magnifica? Lots of sun? Better off in a greenhouse than outside in winter? Thanks, Kathleen PNW, zone 8, with wet cool winters, and this year, a very cold spring