Rock Garden Plants
Penstemon  hallii A.Gray  sect. Habroanthus 
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FamilyPLANTAGINACEAE
Genus species var.Penstemon  hallii A.Gray  sect. Habroanthus
Territory Northwestern U.S.A.Colorado
rocky slopes
Altitude3500-4700m
Description leaves thickish, oblong to oblong-spathulate, blue-green, entire, raceme short, spicate, 5-15- flowered, flowers 15-20mm, broadly campanulate, staminodium shortly hirsute
Size15-20cm
Colorbluish violet
Bloomsummer
Ca
Typecarpet
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
Bibliography
USDA Plants Database plants.usda.gov
Picture
Version 8.0
(c) 1990-2016 RNDr. Pavel Slabý