It shouldn't work, but it does: yellow narcissus, white arabis, pink arabis, purple iris...I never planned on all of these blooming at once...but I kind of like the exuberance.
This is a short rock wall that I built around the small bog we dug in the back garden. The native columbines seem to love it. This little vignette is a distillation of a crumbling roadside cliff about a mile from here. It's the same type of rock, and blooms orange with columbines this time of year. I'm worried that I'll crash into it one day as I gawk at the columbines in bloom. My little garden example can't compare, but it still satisfies because it reminds me of the inspiration.
Daphne x burkwoodii 'Carol Mackie". So yummy this time of year.