Rock Garden Plants
Penstemon cardwellii Howell sect. Erianthera 
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FamilyPLANTAGINACEAE
Genus speciesPenstemon cardwellii Howell sect. Erianthera
BibliographyFl. N.W. Amer.: 510 (1901)
Native RangeOregon to Washington
Primary BiomeTemperate
Habitatrocky slopes
Altitude400-1900m
Descriptionleaves glabrous, shortly petiolate, elliptic, 15-35mm long, obtuse, inflorescence racemose, glandular-hirsute, flowers 30-38mm long, outside glabrous, in mouth ca. 1cm wide
Size10-30cm
Colorbluish violet, purple
Bloomsummer
Ca
Typesubshrub
Cultivationsunny 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
SynonymsPenstemon fruticosus ssp. cardwellii (Howell) Piper
Territory7 Northern America
     73 Northwestern U.S.A. (ORE Oregon, WAS Washington)
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