Rock Garden Plants
Penstemon hallii A.Gray sect. Glabri 
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FamilyPLANTAGINACEAE
Genus speciesPenstemon hallii A.Gray sect. Glabri
BibliographyProc. Amer. Acad. Arts 6: 70 (1862)
Native RangeColorado
Primary BiomeSubalpine
Habitatrocky slopes
Altitude2800-4000m
Descriptionleaves thickish, oblong to oblong-spathulate, blue-green, entire, raceme short, spicate, 5-15-flowered, flowers 15-20mm, broadly campanulate, staminodium shortly hirsute
Size10-15cm
Colorbluish violet
Bloomsummer
Ca
Typeperennial
Cultivationrock crevices with favourable water regime, eastern slopes
alpine house, poor, drained soil, shading in summer
Propagationseed in spring, barely covered, germ. 1-3 months, 13-18°C
division in spring; cuttings in late summer
SynonymsPenstemon bakeri Greene
Territory7 Northern America
     73 Northwestern U.S.A. (COL Colorado)
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(c) 1990-2025 RNDr. Pavel Slabý