Aquilegia ‘Munstead White' You could use any aquilegia they come in all kinds of colours and variations. They all self seed, not too much but quite a lot. Might be a nice one to grow with Edie as it germinates well and wouldn't disappoint. If you want it to keep looking the same year on year, only grow one type, they are promiscuous and will interbreed readily which usually means you end up with dull colours in the end. Mine are all dull now.
Astrantia 'Hadspen Blood' This Masterwort prefers part shade and moist soil that does not dry out. Masterwort blooms continuously throughout the summer and fall, wafting a sweet scent. Like Queen Anne’s lace, each masterwort blossom is an umbel of tiny flowers, framed by a collar of papery bracts.
I liked the very finely textured pattern. most of the shadows till now have been large, we can do some detail work too. Google Image Result for http://designyoutrust.com/wp-content/uploads/2012/08/i1a29.jpg