Rock Garden Plants
Onosma  tricerosperma Lag.   
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FamilyBORAGINACEAE
Genus species var.Onosma  tricerosperma Lag. 
Territory Southwestern EuropeNorthern AfricaAlgeriaMoroccoSpain
rocky slopes
Description stem red-purple, leaves green, oblong-spathulate, lower leaves 6-15cm long, corolla 16-23mm long
Size20-40cm
Colorbright yellow
Bloomsummer
Ca
Typetuft
Cultivationsunny, dry, rock crevices, protection against winter wet
alpine house, poor, drained soil, sun
Propagationseed in spring, germ. 1-3 months, 13-18°C
cuttings in late summer
BibliographyTutin T.G.(ed.) Flora Europaea (1964-1980)
Euro+Med PlantBase www.emplantbase.org
Version 8.0
(c) 1990-2016 RNDr. Pavel Slabý