Rock Garden Plants
Dracocephalum  ruyschiana L.   
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FamilyLAMIACEAE
Genus species var.Dracocephalum  ruyschiana L. 
SynonymsDracocephalum alpinum Salisb.
 Dracocephalum hyssopifolium Steud.
 Dracocephalum spicatum (Mill.) Dulac
Territory
grassland and woods
Altitude300-2200m
Description leaves narrowly lanceolate, glabrous, entire, with revolute margins, flowers 2-3cm long, in whorls of 2-6, in terminal spike
Size15-25cm
Colorblue
Bloomsummer
Ca
Typetuft
Cultivationcold, semi-shady site with a humous, moist soil
alpine house, moist, humous soil, semi-shade
Propagationseed in spring, barely covered, germ. 1-3 months, 10-16°C
division in early spring; basal cuttings in late spring
BibliographyTutin T.G.(ed.) Flora Europaea (1964-1980)
World Checklist apps.kew.org/wcsp
Picture
Version 8.0
(c) 1990-2016 RNDr. Pavel Slabý