Rock Garden Plants
Penstemon  cyananthus Hook.  sect. Habroanthus 
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FamilyPLANTAGINACEAE
Genus species var.Penstemon  cyananthus Hook.  sect. Habroanthus
Territory Northwestern U.S.A.Southwestern U.S.A.IdahoMontanaUtahWyoming
rocky slopes
Altitude1300-2700m
Description glabrous, basal leaves ovate-lanceolate, stem leaves shorter and wider, ovate, sessile, inflorescence elongate, with long internodes, flowers 17-25mm, staminodium orange
Size40-60cm
Colordark bluish violet
Bloomsummer
Ca
Typetuft
Cultivationsunny, dry, 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
BibliographyCronquist, A. et al. (1972-2005) Intermountain Flora
USDA Plants Database plants.usda.gov
Version 8.0
(c) 1990-2016 RNDr. Pavel Slabý