Short lived native wildflower, more likely annual or biennial, that stays in your garden by self seeding.
Why do we grow this plant? It's simple, native flora doesn't offer many blue flowers and nearly any showy bluebells (these all originate in Europe or Euro-Asia). And American Blubell ( or tall Bluebell) is very showy and charming.
It prefers some shade during the day - so half shade, light shade, dappled shade and on moist soil even partial sun (mostly sun). Average soils or drained soil, with average moisture (medium) to medium-moist.
Height depends on the fertility of the soil and moisture in the spring season, so it can grow to 2-3' only, or in rainy spring up to 6', it is narrow upright plant with width only 1-2'.
The whole feel is very airy, thin looking plant, that doesn't take much room, only in full height pf 6', it starts to branch, but otherwise it is slender vertical plant. But you will notice it, it has it's own beauty.
Blooms in June/July till August.
Native wildflower to eastern half of USA and Canada, where it naturally occurs in moist to slightly dry deciduous woodlands, along woodland paths, open woodlands, woodland edges and borders or thickets. See the USDA distribution map.
Hardy in zones 4 to 7. Deer may occasionally browse on the foliage.
Its is fairly good pollinator plant for long-tongued bees (bumblebees, leaf-cutting bees, oligolectic bee and others), who are the main pollinators seeking for nectar and pollen. Other visitors include Halictid bees, butterflies, and skippers.
The best garden use to plant it in desired half shade place or meadow, or light woodland garden, on the edge of bigger trees and let it selfseed and naturalize. It meets in flower with Rudbeckia triloba (Brown-eyeed Susan) or even Rudbeckia fulgida 'Goldstrum', which makes wonderful contrasting combo of blue and yellow.
Pot size : square 3.5" x 4" deep perennial pot
Picture copyright : US perennials nursery