A dry-country wildflower of the Intermountain West whose narrow, scarlet, tubular flowers line a slender stalk that rises about 3 feet above a low rosette of glaucous blue-green leaves. The Lady Bird Johnson Wildflower Center documents it blooming red from May into August on dry, gravelly soils, and it is one of the classic hummingbird-pollinated penstemons. Deeply drought-tolerant once established — best on lean, well-drained ground where it is not over-watered.

A clump-forming aromatic native perennial of eastern North America, grown as much for its silvery floral bracts as its bloom — the upper leaves below each flower head turn a frosted, dusty-mint color in summer. Dense flat-topped clusters of tiny two-lipped pinkish-white flowers cover the plant from mid to late summer and are a magnet for bees and butterflies. Unlike the true mints (Mentha), it spreads only modestly by rhizome and is not invasive.

A widespread native perennial in the mint family with showy lavender flower heads through summer, distinctly more drought-tolerant than its cousin scarlet bee balm (Monarda didyma). Supports ruby-throated hummingbirds, hummingbird clearwing moths, three documented specialist bees, and provides stem-nesting bee shelter through winter.

A native eastern North American clump-forming perennial with palmately-lobed foliage and clustered pink-to-purple five-petaled spring flowers. Among the most reliable native woodland perennials for cool-moist sites; tolerates a wide range of conditions and slowly naturalizes by self-seeding.

A drought-hardy western-native subshrub (long known as Zauschneria) that lights up dry, rocky ground with scarlet tubular flowers from midsummer until frost — exactly when migrating and resident hummingbirds need a late-season nectar source. Slender, highly-branched stems carry small grey-green lance-shaped leaves; the whole plant thrives on full sun, lean soil, and very little water once established.

A low, clump-forming native woodland violet of eastern North America, grown for its early spring blue-to-purple flowers with conspicuous white throats held over glossy, heart-shaped leaves. It does not run, but self-seeds freely — to the point of being weedy in rich, moist ground. A larval host for fritillary butterflies and a nectar source for early bees and butterflies; the leaves are high in vitamins A and C.