Rock Garden Plants
Penstemon subglaber Rydb. sect. Glabri 
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FamilyPLANTAGINACEAE
Genus speciesPenstemon subglaber Rydb. sect. Glabri
BibliographyBull. Torrey Bot. Club 36: 688 (1909)
Native RangeIdaho to w. Wyoming and Utah
Primary BiomeTemperate
Habitatsandy grassland
Altitude1600-3400m
Descriptionrobust, glabrous, in inflorescence pubescent, leaves dark green, oblong to broadly lanceolate, flowers in paniculate inflorescence, corolla pubescent, 2-3cm long
Size15-90cm
Colordark violet-blue
Bloomsummer
Ca
Typeperennial
Cultivationsunny site with a poor, sandy soil
alpine house, sandy soil, sun
Propagationseed in spring, barely covered, germ. 1-3 months, 13-18°C
division in spring; cuttings in late summer
SynonymsPenstemon glaber var. utahensis S.Watson
Penstemon utahensis (S.Watson) A.Nelson
Territory7 Northern America
     73 Northwestern U.S.A. (IDA Idaho, WYO Wyoming)
     76 Southwestern U.S.A. (UTA Utah)
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(c) 1990-2025 RNDr. Pavel Slabý