Rock Garden Plants
Penstemon  degeneri Crosswh.  sect. Humiles 
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FamilyPLANTAGINACEAE
Genus species var.Penstemon  degeneri Crosswh.  sect. Humiles
Territory Northwestern U.S.A.Colorado
grassland and thickets
Description stem leaves sparse, narrow, basal leaves wide, to 7cm long, flowers in compact thyrsus, corolla 14-19mm long, not barbate, blue striate
Size25-40cm
Colorbluish violet
Bloomsummer
Ca
Typetuft
Cultivationmesic, slightly humous, semi-shady site
alpine house, moist, rich, drained soil, semi-shade
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
Version 8.0
(c) 1990-2016 RNDr. Pavel Slabý