Penstemon davidsonii var. menziesii
A creeping mat-forming shrubby alpine with mid-green leaves and pretty, tubular-shaped, violet-purple flowers in late spring.
Penstemon davidsonii var. menziesii ‘Microphyllus’
A prostate shrubby alpine with mid-green leaves and pretty, tubular-shaped, violet-purple flowers in late spring.
Penstemon digitalis
A perennial with narrow basal leaves and clusters of tubular-shaped, pretty white flowers sometimes flushed very pale violet in summer.
Penstemon digitalis ‘Husker Red’
A perennial with narrow basal leaves, maroon-red when young and clusters of tubular-shaped, pretty white flowers, tinted pink in summer.
Penstemon fruticosus var. scouleri f. albus
A shrubby evergreen perennial with narrow leaves and dense clusters of tubular-shaped, pretty white flowers in summer.
Penstemon glaber
A perennial with bluish green leaves and tubular-shaped, pretty blue to violet-blue, sometimes pink flowers in spring.
Penstemon hartwegii
A woody-based perennial with glossy leaves large tubular-shaped, pretty scarlet-red or dark purple-red flowers.
Penstemon hartwegii albus
A woody-based perennial with glossy leaves large tubular-shaped, pretty white flowers.
Penstemon heterophyllus
An evergreen subshrub with bluish green leaves large tubular-shaped, pretty pinkish blue flowers in summer.
Penstemon heterophyllus ‘Blue Gem’
A dwarf evergreen subshrub with bluish green leaves large tubular-shaped, pretty intense blue flowers in summer.
Penstemon heterophyllus ‘Blue Springs’
An evergreen subshrub with bluish green leaves large tubular-shaped, pretty intense blue flowers in summer.
Penstemon heterophyllus ‘Heavenly Blue’
An evergreen subshrub with bluish green leaves large tubular-shaped, pretty blue flowers in summer.