Rock Garden Plants
Penstemon cyananthus Hook. sect. Glabri 
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FamilyPLANTAGINACEAE
Genus speciesPenstemon cyananthus Hook. sect. Glabri
BibliographyBot. Mag. 75: t. 4464 (1849)
Native Rangenw. USA to Utah
Primary BiomeTemperate
Habitatrocky slopes
Altitude1300-3300m
Descriptionglabrous, basal leaves ovate-lanceolate, stem leaves shorter and wider, ovate, sessile, inflorescence elongate, with long internodes, flowers 17-25mm, staminodium orange
Size5-60cm
Colordark bluish violet
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
SynonymsPenstemon glaber var. cyananthus (Hook.) A.Gray
Penstemon glaber f. cyananthus (Hook.) Voss
Territory7 Northern America
     73 Northwestern U.S.A. (IDA Idaho, MNT Montana, WYO Wyoming)
     76 Southwestern U.S.A. (UTA Utah)
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(c) 1990-2025 RNDr. Pavel Slabý