Anemone nemorosa is easy to grow here in New Jersey. I moved some 'Vestal', the crested white form from my Connecticut garden when we moved here 7 years ago. I also brought some largish blue ones, probably 'Robinsonniana'. I am also growing A. ranunculoides, but prefer the hybrid A. X lipsiensis, with larger, creamy yellow flowers. A. ranunculoides is in flower now, A. nemorosa in bud. Lots of A. blanda in bloom also. Probably the most "unusual" anemone I grow is Anemone flaccida, a species from Japan with attractive, but fugacious foliage (summer dormant.) It is a shy bloomer, with only a modest, actually minimal is probably more accurate, display. Each flowering stem produces a sequence of two pure white flowers. They grow from a rhizome that looks like a fat A. nemorosa, chestnut brown in color. They prefer woodland shade and a moist to average site. Judy in New Jersey where Dicentra cucullaria and Erythronium americanum are in flower in the nearby woods