Hydrangea macrophylla ‘Blue Danube’

synonyms: H. m. ‘Blaue Donau (German), H. m. ‘ Danube Bleu’ (French)

Probably of German origin (details unknown)

Hydrangea macrophylla 'Blue Danube'Hydrangea macrophylla ‘Blue Danube’ is a small shrub with large flowerheads. Ideal for growing in a container.

Inflorescence: Mophead, 180mm across. These photographs would indicate a deep pink flower colour but Hydrangea macrophylla ‘Blue Danube’ can be the darkest of blues in acidic soil.

Colour in neutral soil:                            Deep pink
Colour in acidic soil with Al present:     Rich, deep blue

Hydrangea macrophylla 'Blue Danube' floretRay florets:  4-5 sepals, entire, rounded, overlapping, 45mm diam.

Zones: 6-9

Size: Small (to 1m).

Hydrangea macrophylla 'Harlequin' leaf

Leaves: Simple, opposite and deciduous. Dark green. Broadly ovate to broadly elliptic.  Margin: serrate.  Apex: apiculate.  Base: attenuate.  Venation pattern: pinnate.  Texture of adaxial and abaxial surfaces: smooth, glabrous, glossy. 150mm l x 90mm w.