Rock garden plants Penstemon  cardwellii Howell  sect. Dasanthera 
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FamilySCROPHULARIACEAE
Genus species var.Penstemon  cardwellii Howell  sect. Dasanthera
SynonymsPenstemon fruticosus ssp. cardwellii (Howell) Piper
Territory NW.USA: Oregon, Washington
rocky slopes
Altitudemontane
Description leaves glabrous, shortly petiolate, elliptic, 15-35mm long, obtuse, inflorescence racemose, glandular hirsute, flowers 30-38mm, externally glabrous, in mouth about 10mm wide
Size10-30cm
Colorblue-violet, purple
Bloomsummer
Ca
Typeshrub
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
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