Rock Garden Plants
Delphinium  bicolor Nutt.   
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FamilyRANUNCULACEAE
Genus species var.Delphinium  bicolor Nutt. 
SynonymsDelphinium bicolor var. montanense Rydb.
 Delphinium helleri Rydb.
Territory Western CanadaNorthwestern U.S.A.North-Central U.S.A.AlbertaBritish ColumbiaIdahoMontanaNorth DakotaSaskatchewanSouth DakotaWyoming
grassland
Altitude600-3100m
Description leaves few, usually basal, 3-6cm wide, palmatipinnate, segments incised, ultimate lobes narrowly oblong, flowers 2-15, 15-20cm long, in lax raceme, calyx dark purple-blue
Size10-30cm
Colordark blue
Bloomlate spring, summer
Ca-
Typetuft
Cultivationmesic, slightly humous, sunny site
alpine house, moist, rich, drained soil, sun
Propagationseed in winter, barely covered, germ. 1-3 months, 10-13°C
division in spring just as young growth commences
BibliographyFlora of North America www.eFloras.org
USDA Plants Database plants.usda.gov
Picture
Version 8.0
(c) 1990-2016 RNDr. Pavel Slabý