Generally late April/May when we start getting 10+ hours of sunshine a day. Though the first year we lived here we had three inches of snow on mothers day, so everything that had started coming up that wasn't a native plant, died off with out flowers. *sigh* But temps will warm up to around 45/50 in that time frame so combine that with the extended sun hours and we should be set for some good blooms before June. (: Granted I could probably go on hikes and find native flowers blossoming. The Alaskan Iris are quite lovely, but again I think they bloom in June. xD Then there will also be fireweed picking and salmonberries around that time. yum!