Bleeding Hearts (Dicentra spectablis)
Bleeding hearts multiply like weeds in my gardens...but I still LOVE them. I have them in sun and shade, pink and also a white variety. Plus I have several less invasive cultivars with fern-like leaves. Planted in the shade they can bloom well into July.
If you love flowers check out Today's Flowers at http://flowersfromtoday.blogspot.com/