Rock Garden Plants
Penstemon pruinosus Douglas sect. Penstemon 
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FamilyPLANTAGINACEAE
Genus speciesPenstemon pruinosus Douglas sect. Penstemon
BibliographyEdwards‘s Bot. Reg. 15: t. 1280 (1829)
Native Ranges. British Columbia to Washington
Primary BiomeTemperate
Habitatrocky slopes
Altitude300-2000m
Descriptionleaves sharply serrate, to 10cm long, narrowly to broadly elliptic, ovate, stem leaves sessile, more narrow, inflorescence verticillate, flowers 11-16mm long
Size10-40cm
Colordark blue
Bloomsummer
Ca
Typeperennial
Cultivationsunny rock crevices, protection against winter wet
alpine house, poor, drained soil, sun
Propagationseed in spring, barely covered, germ. 1-3 months, 13-18°C
division in spring; cuttings in late summer
Territory7 Northern America
     71 Western Canada (BRC British Columbia)
     73 Northwestern U.S.A. (WAS Washington)
Picture
Version 10.0
(c) 1990-2025 RNDr. Pavel Slabý