Rock Garden Plants
Penstemon scouleri Douglas sect. Erianthera 
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FamilyPLANTAGINACEAE
Genus speciesPenstemon scouleri Douglas sect. Erianthera
BibliographyEdwards´s Bot. Reg. 15: t. 1277 (1829)
Native Rangew. Canada to nw. USA
Primary BiomeTemperate
Habitatrocks
Altitude200-2200m
Descriptionstems glabrous, leaves obovate-lanceolate or oblanceolate, sharply serrate, acute, glabrous, inflorescence secund, cymes 1-flowered, sepals lanceolate, acuminate, corolla 4cm
Size10-25cm
Colorblue-violet
Bloomlate spring, summer
Ca
Typesubshrub
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
cuttings in late summer
SynonymsChelone scouleri Douglas ex Lindl.
Penstemon fruticosus var. scouleri (Douglas) Cronquist
Penstemon fruticosus ssp. scouleri (Douglas) Pennell & D.D.Keck
Penstemon menziesii var. scouleri (Douglas) A.Gray
Penstemon menziesii f. scouleri (Douglas) Voss
Territory7 Northern America
     71 Western Canada (ABT Alberta, BRC British Columbia)
     73 Northwestern U.S.A. (IDA Idaho, WAS Washington)
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(c) 1990-2025 RNDr. Pavel Slabý