I figured that since purple-leaved Euphorbia polychroma 'Bonfire' survives in my garden, 'First Blush' would too. I'm always looking for more hardy plants that deer don't eat! I'm not sure if I'll be able to love the combination of pink leaves and yellow flowers though, as I don't like that dwarf spirea bush with yellow leaves and pink flowers (I have one, of course). I don't have Sedum seiboldii at the moment. I grow a number of Sedums just fine, but I find the grey-leaved Japanese ones tend to dwindle away - I'm not sure why, but unreliable winter snow-cover is probably a factor. Most of my garden is very open to the sun and wind. I just finished planting a new flower garden that is surrounded by trees and bushes, and I have great hopes that the snow will stick around longer in it.