Rock Garden Plants
Penstemon cyathophorus Rydb. sect. Coerulei 
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FamilyPLANTAGINACEAE
Genus speciesPenstemon cyathophorus Rydb. sect. Coerulei
BibliographyBull. Torrey Bot. Club 31: 643 (1905)
Native RangeColorado to Wyoming
Primary BiomeTemperate
Habitatsandy grassland
Altitude2100-2900m
Descriptionglabrous, grey-blue, lower leaves broadly lanceolate, to 6cm long, upwards reduced, bracts suborbiculate, inflorescence spicate, flowers 9-15mm, staminodium barbate
Size20-40cm
Colorbright blue, pink, white
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. (COL Colorado, WYO Wyoming)
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(c) 1990-2025 RNDr. Pavel Slabý