Penstemon consists of perennial or subshrub species that can be either deciduous or evergreen. They typically feature slender, elongated leaves and produce clusters of bell-shaped or funnel-shaped blooms during the summer and early fall.

Penstemon californicus

Penstemon calycosus

Penstemon campanulatus is a semi-evergreen perennial that grows upright and forms clumps, reaching heights of up to 60 cm. It features slender stems adorned with dark green, serrated, lanceolate leaves. In early summer, this plant produces loose clusters of bell-shaped flowers, measuring up to 3 cm in length. The predominant flower color is mid- to light purple, often with white variations, although red-flowered forms are also available.

Penstemon campanulatus

Penstemon campanulatus 'Aztec Gem'

Penstemon campanulatus 'Crac's Delight'

Penstemon campanulatus 'Roseus'

Penstemon campanulatus subsp. chihuahuensis

Penstemon cardinalis

Penstemon cardinalis subsp. regalis

Penstemon cardwellii

Penstemon caryi

Penstemon cedrosensis

Penstemon centranthifolius

Penstemon cinicola

Penstemon clevelandii subsp. connatus

Penstemon clutei

Penstemon cobaea is a perennial that grows in clumps, reaching heights of up to 60 cm. It features broad, oval green leaves and produces upright spikes adorned with sizable, bell-shaped flowers that range in color from pale to deep purple. This species typically flowers from spring through early summer.

Penstemon cobaea

Penstemon comarrhenus

Penstemon compactus

Penstemon confertus is a compact perennial that is not commonly found but is simple to cultivate. It features elongated green leaves and produces clusters of small, flared, tubular flowers in a lemon-yellow hue from April through June. This plant thrives in moist environments such as stream banks, meadows, or woodlands, yet can also adapt to drier locations provided the conditions are cool.

Penstemon confertus

Penstemon confertus var. ochroleucus

Penstemon crandallii

Penstemon crandallii subsp. atratus

Penstemon crandallii subsp. glabrescens

Penstemon crandallii subsp. taosensis

Penstemon crassifolius

Penstemon cyananthus

Penstemon cyananthus var. cyananthus

Penstemon cyananthus var. utahensis

Penstemon cyaneus

Penstemon dark crimson-flowered

Penstemon davidsonii

Penstemon davidsonii 'Silverwells'

Penstemon davidsonii var. davidsonii

A low-growing evergreen subshrub reaching up to 10 cm in height, featuring rounded leaves with blunt teeth. Its funnel-shaped flowers, measuring 3-4 cm in length, are lavender-blue and bloom in upright racemes starting in late spring.

Penstemon davidsonii var. menziesii

Penstemon davidsonii var. menziesii 'Broken Top Mountain'

Penstemon davidsonii var. menziesii 'Microphyllus'

Penstemon davidsonii var. menziesii 'Tolmiei Peak'

Penstemon davidsonii var. praeteritus

Penstemon deamii

Penstemon deaveri

Penstemon debilis

Penstemon degeneri

Penstemon deustus

A robust semi-evergreen perennial that can reach heights of up to 1 meter, this plant features basal, mid-green foliage that can grow to 15 centimeters in length, complemented by stems that have a purple tinge. Throughout the summer, it produces clusters of tubular flowers in pale lavender or white, each measuring about 2.5 centimeters long.

Penstemon digitalis

This semi-evergreen perennial forms clumps and features slender, dark purple-black leaves. Throughout the summer, it produces tubular flowers in shades of pale lavender to pink, borne on strong, upright stems that are also dark purple.

Penstemon digitalis 'Blackbeard'

Penstemon digitalis 'Gold Foil'

Penstemon digitalis 'Goldfinger' is a robust perennial that typically reaches a height of around 75 cm. This plant forms clumps of foliage that remain evergreen at the base. The stems exhibit a purple-red tint, while the lance-shaped leaves are mid-green. New growth showcases a striking golden to lime-green hue, bordered by dark red. In early summer, it produces panicles of tubular flowers that range from pale lavender to white.

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