Rock Garden Plants
Delphinium bicolor Nutt.  
Home
Families
Genus
Territory
Habitat
Synonyms
Types
Galery
Info
FamilyRANUNCULACEAE
Genus speciesDelphinium bicolor Nutt. 
BibliographyJ. Acad. Nat. Sci. Philadelphia 7: 10 (1834)
Native Rangew. & c. Canada to nw. & nc. USA
Primary BiomeTemperate
Habitatgrassland
Altitude600-3100m
Descriptionleaves 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-
Typeperennial
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
SynonymsDelphinium bicolor f. devriesii B.Boivin
Delphinium bicolor f. helleri (Rydb.) Ewan
Delphinium bicolor f. mccallae Ewan
Delphinium bicolor f. montanense (Rydb.) Ewan
Delphinium bicolor var. montanense Rydb.
Delphinium bicolor var. typicum Huth
Delphinium helleri Rydb.
Plectrornis bicolor (Nutt.) Lunnell
Plectrornis bicolor var. montanense (Rydb.) Lunell
Territory7 Northern America
     71 Western Canada (ABT Alberta, BRC British Columbia, SAS Saskatchewan)
     73 Northwestern U.S.A. (IDA Idaho, MNT Montana, WYO Wyoming)
     74 North-Central U.S.A. (NDA North Dakota, NEB Nebraska, SDA South Dakota)
Picture
Version 10.0
(c) 1990-2025 RNDr. Pavel Slabý