Rock Garden Plants
Penstemon  humilis A.Gray  sect. Humiles 
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FamilyPLANTAGINACEAE
Genus species var.Penstemon  humilis A.Gray  sect. Humiles
SynonymsPenstemon cinereus Piper
 Penstemon decurvus Crosswh.
 Penstemon humilis var. deserticus S.L.Welsh
Territory Northwestern U.S.A.Southwestern U.S.A.South-Central U.S.A.
dry, rocky slopes
Altitude1500-3500m
Description finely cinereous, leaves entire, basal leaves persistent, lanceolate to ovate, to 12cm, stem leaves reduced, inflorescence verticillate, few flowered, flowers 10-17mm
Size20-40cm
Colordark blue
Bloomsummer
Ca
Typesubshrub
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
cuttings in late summer
BibliographyHitchcock, C.L.: Vascular Plants of the Pacific Northwest
USDA Plants Database plants.usda.gov
Version 8.0
(c) 1990-2016 RNDr. Pavel Slabý