Silene regia Bright red, tubular flowers bloom June-August, attracting hummingbirds and large butterflies.
Tradescantia virginiana Clump forming perennial with grass-like leaves and small purple flowers that are attractive to bees, hummingbirds and other pollinators.
Agastache scrophulariifolia Purple Giant Hyssop is a tall, late-summer blooming perennial. Purple flowers are attractive to bees, butterflies and hummingbirds.
Physostegia virginiana Pink flowers clustered at the tips of square stems begin to bloom in late summer.
Asclepias verticillata Fragrant, white flowers bloom in small, flat-topped clusters atop unbranched stems and within the leaf axils, between June and September.
Phlox paniculata Summer blooming purple flowers are attractive to bees, butterflies and hummingbirds.
Campanula rotundifolia Loose clusters of delicate, blue or purple, bell-shaped flowers bloom intermittently atop slender stems from summer through fall.
Penstemon hirsutus Thin, tubular-shaped purple flowers bloom May-July, offering nectar for bees, butterflies and hummingbirds.
Aureolaria pedicularia Showy yellow flowers and lacey, fern-like ornamental leaves make this late summer blooming annual a desirable landscape plant.
Salvia Lyrata Lyreleaf Sage offers striking flowers, as well as patterned foliage, and is attractive to bees and butterflies.