| I love bluebells. Don't know what kind of soil PH you have (acid, alkaline) or if it's clay, sandy, etc., but some flowering perennials that may work in this spot are: Goatsbeard (Aruncus Dioicus) Very tall, white flowers Eastern Red Columbine (Aquilegia Canadensis) and other Columbine Purple joe pye (Eupatorium purpureum) Keep moist Alumroot (Heuchera) Various kinds; mostly a foliage plant, gets tiny flowers on stalks, attractive & interesting leaves Foamflower (Tiarella) Flowers in spring Wild geranium/Cranesbill (Geranium maculatum) Cardinal flower (Lobelia cardinalis) Great blue lobelia (Lobelia siphilitica) Partridgeberry (Mitchella repens) Obedient plant (Physostegia virginiana): Purple flowers, and there is also a variety called "Miss Manners" that has white flowers. Purple one spreads aggressively. Blooms late in the summer. Astilbe (Various varieties) feathery flower clusters on branch-like spikes. Blooms in June in Zone 6. Various varieties of violets Some daylilies (Hemerocallis) may work in this spot--you can try an inexpensive one and see if it handles the shade or not. Some of the above perennials bloom in spring at the same time as your bluebells, which I'm assuming are "Virginia" bluebells (Mertensia virginica), but some bloom later in the season. Happy gardening! | 
