This is actually the best time to move Dicentra. :-) I usually move mine just about now. Chances are you'll leave a piece or two behind. They'll grow back anyway.

I love D. spectabilis 'Alba' growing in my full shade bed but right from the start planned on it going dormant early in the season. It's just too absolutely gorgeous not to plant. I surrounded it with other shade-loving perennials, including Carex 'Ice Dance' & Hosta 'Krossa Regal' so there are things that conceal the dying foliage once it goes dormant. It's planted on the north side of my house and is right out there to anyone driving or walking past on the road. It's been my experience that the thread-leaf (D. eximia) bleeding heart varieties persist & continue to bloom right into the autumn garden (altho they're noticeably smaller than D. spectabilis) whereas the species can grow quite large--my DIL has a pink one that grows to about 3' x 3' every year. D. spectabilis is also tough as nails--I had some construction done where one was literally growing out of a concrete stairway in full sun for years and, lo & behold, discovered it growing & blooming fully 15 ft away at the top of the stairway this spring.

Those will look great together.. the dicentra will probable bloom before the astibles, You can add in some foxgloves for the cottage effect, they do fine in limited light, as does columbine, the columbine and the dicentra will bloom around the same time, then the foxglove and asitibles can take over.. Ive had very little success wintersowing astibles(I know others have great success), but foxgloves and columbine are easy wintersowers for me.. you can actually wintersown the bleeding hearts, the old kind will come true from seed, but they take years that way to get any bloom from them.. So if it was me, I would probable purchase the astibles and the burning bleeding hearts (or get some of the old kind, They get MUCH bigger.. the new ones bloom a little later around here and are much shorter, but they are nice as well) and fill in with columbine and foxgloves.. I love daffs, but hate them as well.. great EARLY spring color with no fuss really.. but then its over.. I just put them in as pockets around the garden.. I dont do whole beds of them.. I know its way more dramatic that way.. but I like summer perennials much more.. and while some peoples garden fade after spring.. mine starts then.. Silverkelt

How odd, both yours and the ones in the woods. I've got a dribble of unhappy 'Langtrees' that are under some ever-larger paper birches that continue to flower every year despite diminishing overall. Some barely-still-there 'Alba' have also continued to bloom under an Alaska cedar/purple filbert overburdon. If you are in the mountains you could be in 7, to be in 6 you would have to be in eastern WA. Here is a link that might be useful: Washington Zone Map