Two-lipped lavender flowers with long purple hairy stamens open in June to September. This scarce, drought-tolerant plant, that attracts butterflies and bees, is perfect for a hot garden or a rocky or sandy, very well-drained spot. ... Learn More

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

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

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 pure white 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

Purple-lilac flowers with violet-striped white throats, and unusually pronounced splayed and pointed lips, open on one of the showiest of all penstemons. This rare plant is rich-flowering, and will self-sow in naturalized conditions, making it perfect for planting on well-drained soils and hillsides. As with all penstemons, butterflies and bees are regular visitors. In the wild it is native to the rocky slopes of the Great Smoky Mountains. And contrary to its name, the gorgeous flowers are definitely not small....but it was originally discovered by a Mr. Small! ... Learn More

A new and completely hardy, long-flowering plant, which produces from early summer into late autumn a seemingly endless succession of white throated, bright red flowers. ... Learn More

A tall and impressive plant, this vigorous specimen produces a tall spike of ivory-white tube-shaped flowers in late spring, which will add a splash of colour to the perennial border when little else is flowering. It dies back each autumn to a rhizomatous rootstock allowing it to survive the most severe winters. In the wild it grows in central USA and is found as far north as Canada. Early season butterflies will find this beauty irresistible! ... Learn More

This sizeable spreading shrub, with few or no basal leaves, sports strong stems carrying long, upward-facing flowers, which are bright blue to lavender-blue, sometimes with white hairs on the floor of the tubular blossom. In the wild in the USA this plant grows on dry rocky slopes at high elevations. Few scarce seeds collected. ... Learn More

This is the stunning white-flowered form of this sizeable spreading shrub, with few or no basal leaves, sports strong stems carrying long, upward-facing ivory-white flowers, sometimes with white hairs on the floor of the tubular blossom. In the wild in the USA this plant grows on dry rocky slopes at high elevations. ... Learn More

This easy, but surprisingly uncommon plant, has a basal rosette of blue-grey leaves, from which arise branching, leafy stems. At the end of each division open frilly, white or pale pink flowers, which are ideal for a rock garden, raised bed or even a container. ... Learn More

This delightful, bone hardy, extremely dwarf shrub is native mainly to California and is confined to rocks and crevices in the mountains of the interior of western North America. It displays its evergreen blue-green tufts, and attractive, small bottle brush-like white flowers in summer and does well in sun or part shade in very sharply drained soil. In cultivation it will do well in trough, crevice garden or scree bed and will make a good pan for an alpine show. ... Learn More