Rock Garden Plants
Penstemon cyaneus Pennell sect. Glabri 
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FamilyPLANTAGINACEAE
Genus speciesPenstemon cyaneus Pennell sect. Glabri
BibliographyContr. U.S. Natl. Herb. 20: 351 (1920)
Native Rangenw. USA
Primary BiomeTemperate
Habitatsandy grassland
Altitude1400-2900m
Descriptionglabrous, leaves petiolate, oblanceolate to narrowly elliptic, stem leaves lanceolate, often amplexicaule, inflorescence openly verticillate, flowers 25-35mm long
Size30-70cm
Colorbright 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
Territory7 Northern America
     73 Northwestern U.S.A. (IDA Idaho, MNT Montana, WYO Wyoming)
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(c) 1990-2025 RNDr. Pavel Slabý