Rock Garden Plants
Houstonia  purpurea L.   
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FamilyRUBIACEAE
Genus species var.Houstonia  purpurea L. 
SynonymsHedyotis purpurea (L.) Torr. & A.Gray
 Knoxia purpurea (L.) Poir.
 Oldenlandia purpurea (L.) A.Gray
Territory North-Central U.S.A.Northeastern U.S.A.South-Central U.S.A.Southeastern U.S.A.
grassland
Description stems erect, leaves large, ovate, flowers in terminal or lateral panicles, flowers 1cm long
Size10-40cm
Colorlilac, red
Bloomsummer
Ca
Typesubshrub
Cultivationmesic, slightly humous, sunny site
alpine house, moist, rich, drained soil, sun
Propagationseed in spring, barely covered, germ. 1-3 months, 10-16°C
cuttings in late summer
BibliographySmall, J.K. (1933) Manual of the Southeastern Flora
World Checklist apps.kew.org/wcsp
Version 8.0
(c) 1990-2016 RNDr. Pavel Slabý