I can ditto Bob's praise for Adena Hems and Mike Darrow. I ordered for the first time last year and was sent extremely nice plants with a couple generous bonus plants. Most of them bloomed the same year for me. I am in a zone 5 area with fewer growing days than most zone 5s and they made it through the worst winter in a long time, great.
Not much is blooming here yet, but Adena Imposter gave me a beautiful bloom yesterday. I can't report on the rebloom of this one yet but I search out plants with "Frequent Flyer" in the background as it is a good parent for northern rebloom.
Adena Imposter (Derrow, 2013)
height 18in (46cm), bloom 3in (7.6cm), season E, Rebloom, Dormant, Diploid, 18 buds, 1 branches, Light shell pink petals with round royal purple eye and complete picotee edge, green throat, flat, round outfacing blooms, multiple rounds of rebloom. (Lavender Blue Baby × Frequent Flyer)