Penstemon ‘Sour Grapes’
A large-leaved perennial with large tubular-shaped, pretty greyish blue flowers, suffused purple and green.
Penstemon serrulatus
A spreading, semi-evergreen subshrub with glossy dark green leaves and pretty, tubular pinkish purple flowers in late summer.
Penstemon ‘Schoenholzeri’
A narrow-leaved bushy perennial with large, tubular-shaped, scarlet flowers.
Penstemon ‘Russian River’
A large-leaved perennial with large tubular-shaped, pretty dark purple flowers.
Penstemon ‘Rubicundus’
A large-leaved perennial with large tubular-shaped, pretty warm red flowers.
Penstemon richardsonii
An evergreen subshrub with divided leaves and pretty pink, rosy lilac, or bright lavender flowers in summer.
Penstemon ‘Rich Ruby’
A large-leaved perennial with large tubular-shaped, pretty burgundy-red flowers.
Penstemon ‘Raven’
A large-leaved perennial with large tubular-shaped, pretty black-maroon flowers with a purple veined white throat.
Penstemon ‘Purple Bedder’
A large-leaved perennial with large tubular-shaped, pretty purple-maroon flowers.
Penstemon procerus ssp. tolmiei
A compact perennial with narrow leaves and pretty lilac-blue to purple-blue flowers in summer.
Penstemon ‘Pink Endurance’
A large-leaved upright perennial with tubular-shaped, pretty rose-pink flowers with a white throat.
Penstemon pinifolius ‘Mersea Yellow’
An evergreen subshrub with narrow, needle-like leaves. Narrow tubular-shaped, pretty bright deep yellow flowers in summer.