Top 10 Shade Garden Perennials:
http://gardening.about.com/od/choosingperennialplants/tp/ShadePerennials.htm
1. Aconitum fischeri - Monkshood (poisonous)
2. Aquilegia - Columbine
3. Astilbe - False Spirea
4. Belamcanda chinensis - Blackberry Lily (summer)
5. Cimicifuga racemosa- Bugbane, Black Cohosh, Black Snakeroot (late summer or fall)
6. Dicentra - Bleeding Heart (spring or summer)
7. Epimedium - Barrenwort (spring to fall)
8. Primula - Primrose (spring)
9. Thalictrum aquilegifolium - Meadow Rue (summer)
10. Spring Blooming Woodland Flowers