Rock Garden Plants
Spiraea stevenii (C.K.Schneid.) Rydb.  
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FamilyROSACEAE
Genus speciesSpiraea stevenii (C.K.Schneid.) Rydb. 
BibliographyN. Amer. Fl. [N.L. Britton & al., eds.] 22: 247 (1908)
Native RangeSubarctic America to w. Canada
Primary BiomeTemperate
Habitatgrassland and thickets
Altitude0-2000m
Descriptionleaves shortly petiolate, elliptic or oval, 1-4cm, crenate, subglabrous, rounded, inflorescence flat, 2-5cm across, sepals ovate, petals orbiculate, ca. 2mm
Size10-60cm
Colorwhite
Bloomlate spring, summer
Ca
Typeshrub
Cultivationmesic, slightly humous, semi-shady site
alpine house, moist, rich, drained soil, semi-shade
Propagationseed in spring, barely covered, germ. 1-3 months, 10-16°C
cuttings in late summer
SynonymsSpiraea beauverdiana var. stevenii C.K.Schneid.
Spiraea betulifolia ssp. stevenii (C.K.Schneid.) Nedol.
Territory7 Northern America
     70 Subarctic America (ASK Alaska, NWT Northwest Territories, YUK Yukon)
     71 Western Canada (BRC British Columbia)
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