Rock Garden Plants
Delphinium  nuttallii A.Gray   
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FamilyRANUNCULACEAE
Genus species var.Delphinium  nuttallii A.Gray 
SynonymsDelphinium columbianum Greene
 Delphinium exaltatum var. nuttalii (A.Gray) Huth
 Delphinium oreganum Howell
Territory Northwestern U.S.A.OregonWashington
grassland and rocks
Altitude0-300m
Description leaves few, mostly basal, long petiolate, blades 2-6cm wide, bi- to tripinnatipartite or lobate, ultimate segments linear, flowers 3-20, in raceme, lower petals bifid
Size15-40cm
Colorbluish purple, yellowish
Bloomspring, summer
Ca
Typetuberous perennial
Cultivationsunny, dry, rock crevices, protection against winter wet
alpine house, poor, drained soil, sun
Propagationseed in winter, barely covered, germ. 1-3 months, 10-13°C
division of resting tubers
BibliographyFlora of North America www.eFloras.org
USDA Plants Database plants.usda.gov
Version 8.0
(c) 1990-2016 RNDr. Pavel Slabý