Hydrangea macrophylla ‘Nachtigall’ is a beautiful dark blue or violet lacecap, particularly if fed with aluminium sulphate. Deep pink to red if grown in neutral soil.
Inflorescence: The large lacecap corymbs can be up to 150mm in diam.
synonym: H. m. ‘Nightingale’
Bred by the Federal Research Institute for Horticulture, Wädenswil, Switzerland, in 1979.
Zones: 6 to 9
Size: Medium (to 1.5m).
Color in neutral soil:
Deep pink to red.
Color in acidic soil with AI present:
Rich dark blue to violet.
Ray florets: 4 sepals, slightly serrated, overlapping, 60mm 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 110mm w.