Native to the eastern Canada and the United States, this attractive and-easy-to-grow perennial species has hairy stems (hence its species name, hirsutus) bearing leaves which are opposite and stalkless. Numerous purple-blue and white trumpet flowers open over an extended period in early and mid summer. This is a very versatile penstemon for full sun to full shade and medium wet to dry soils. ... Learn More

Another of the easier, drought tolerant penstemons, this one forms a lowish mat of leathery dark-green leaves, with upright stems bearing tubular, pure white flowers. It make a very showy early summer display in the rock garden, foliage turning an attractive bronze-red colour in winter. ... Learn More

This is a lovely bright form of this species from the mountainous western states of the USA, where it decorates the hillsides with compact clumps of white-throated, pale purple, tubular flowers in spring and early summer. ... Learn More

This rare and tiny plant has long pale purple tubular flowers, darker on top, in early summer. Making a compact cushion of small-leafed stems, it is ideal for a small rock garden or pot on the porch, and although bone hardy from the cold, it prefers a dryish, wel-drained spot. ... Learn More

Mounds of purple-tinted leaves are soon decorated in spring by long, thin, pink trumpets with white flared mouths opening on striking, purple, thin, dividing stems. When grown with no surrounding competition this dwarf plant makes a superb specimen. ... Learn More

An exquisite introduction from Idaho/Montana. A compact overwintering rosette sprouts forth many branching stems heavily laden with large, slightly squashed, deep lavender blue flowers. Long flowering in midsummer. ... Learn More

This semi-evergreen perennial opens its purple bell shaped flowers, all beautifully-marked in the throat, over a prolonged period in early and mid summer. Coming from Mexico, it prefers a sandy well drained soil in full sun or part shade. It is completely hardy as long as it is not planted in boggy soil! ... Learn More

Two-lipped, ivory-white flowers with protruding and contrasting black anthers open from June to September. This drought-tolerant plant attracts butterflies and bees and is perfect for a hot garden or a rocky or sandy very well-drained spot. Few seeds. ... Learn More

This very choice, low-growing, cushion or mound forming rounded shrub is covered with bright cherry red tubular or funnel-shaped flowers, which have white-woolly hairs inside. In the wild it grows in rocky outcrops at mid to high elevations at the northern edge of its range in southern Oregon, the mountains of northern California and Nevada. ... Learn More

Pikes Peak Purple is a superb hybrid variety that blooms most of the summer with large concord grape-purple flowers. The plants are vigorous and have attractive glossy green foliage. Drought resistant/drought tolerant plant ... Learn More

This compact new plant produces many tight trusses of bright purple-blue tubular flowers, which are much loved by bees and butterflies, on a compact shrubby clump. If pruned back in early spring it will delight for years to come. ... Learn More

Spikes of sizeable, mauve-throated, bright electric-blue, funnel-shaped flowers, dramatically flared at the end, open in whorls along strong stems. This drought-resistant plant grows in open sagebrush scrub land, juniper woodlands and rocky ridges, and continues into very high elevations in the wild. ... Learn More

Many tight trusses of bright, purple-blue tubular flowers, which are much loved by bees and butterflies, open like drumsticks on a compact shrubby clump, which becomes shrub-like in a protected well-drained position. If pruned back in early spring it will delight for years to come. ... Learn More

This dwarf, shrubby, evergreen plant is a perfect choice for rock gardens, opening its pure white, tubular flowers in May, and it can continue flowering into autumn. Unless seed is needed, dead-heading after flowering will keep it compact and healthy. ... Learn More

This compact new plant produces many tight trusses of bluish-mauve tubular flowers, which are much loved by bees and butterflies, on a compact shrubby clump. If pruned back each early spring it will flower for a long time and delight for years to come ... Learn More