snowdrop windflower is easy to grow and spreads to form nice little drifts. it blooms for a second time in the cooler weather of early autumn. name: anemone sylvestris size: to 18 inches tall zones: 4-8
Monkshood: Aconitum nagarum, dark purple form. I can't pin down a variety or a source for seeds, sadly. You will have to do a bit of sleuthing if you want one. Excellent for a poison garden; not so good if you have kids around.