I grow Scilla siberica and several types of Chionodoxa in my mild, wet winters and very hot summers. They currently get supplemental irrigation and have returned for several years. The Scilla siberica is a slug magnet, preferred to almost anything else except for Hyacinths. Could this account for its ephemeral nature in other gardens? Those in pots are somewhat more protected and I actually got to see flowers this year. All of the above are currently in spectacular bloom in my garden right now. Northern California, zone 8/9, unusually wet this winter with 80+ inches of rain, currently raining. Very hot dry long summers. Lachenalia are in bloom and the common Muscaris are just starting. The Hellebores from Tasmanian seed bloomed for the first time this year and I have numerous doubles and semidoubles. I love variety.