Hydrangea macrophylla 'Nigra’ is a vigorously growing shrub achieving 2m in height at maturity.
Inflorescence: Small mophead flowers, 120mm across, which are cream when newly opened, maturing to a rich lilac.
Synonyms: H. m. ‘Cyanoclada’, ‘Mandschurica’, ‘Kuro Jaku’ or 'Kuro Jiku'.
Imported from China to USA by E.H. Wilson in 1853.
Zones: 6 to 9
Size: Large (to 2m).
Color in neutral soil:
Color in acidic soil with AI present:
Pale to mid-blue
Ray florets: 4, 5 or 6 sepals, hardly overlapping, entire. 55mm diam.
Leaves: Simple, opposite and deciduous. Broadly ovate to broadly elliptic. Margin: serrate. Apex: apiculate. Base: attenuate. Venation pattern: pinnate. Texture of adaxial and abaxial surfaces: smooth, glabrous, moderately glossy. 180mm l x 105mm w.
Distinguishing features of this cultivar are its dark purple to black stems and petioles, and its deep red pedicels and peduncles.