Rock Garden Plants
Penstemon  globosus (Piper) Pennell & D.D.Keck  sect. Proceri 
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FamilyPLANTAGINACEAE
Genus species var.Penstemon  globosus (Piper) Pennell & D.D.Keck  sect. Proceri
SynonymsPenstemon confertus var. globosus Piper (basionym)
Territory Northwestern U.S.A.IdahoMontanaOregon
grassland
Description usually glabrous, leaves entire, oblanceolate to narrowly elliptic, basal leaves to 15cm, inflorescence with few, compact, often spherical whorls, flowers 15-20mm long
Size20-60cm
Colorblue, bluish purple
Bloomsummer
Ca
Typesubshrub
Cultivationmesic, slightly humous, sunny site
alpine house, moist, rich, 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