Hydrangea macrophylla 'Rio' is a compact shrub suitable for growing in the ground or in pots.
Inflorescence: Mophead, 170mm across. Acid soil will intensify the purple, blue and green flowers.
Bred by Franz-Xaver & Konrad Rampp, Bavaria, Germany.
Trade designation: H. m. CITYLINE™ RIO and H. m. RIVERLINE™ RIO GRANDE.
Zones: 5 to 9
Size: Small (to 1m).
Color in neutral soil:
Color in acidic soil with AI present:
Ray florets: 4 sepals, serrated, overlapping, 48mm diam.
Leaves: Simple, opposite and deciduous. Broadly ovate to broadly elliptic. Margin: serrate. Apex: acuminate. Base: attenuate. Venation pattern: pinnate. Texture of adaxial and abaxial surfaces: smooth, glabrous, moderately glossy. 130mm l x 70mm w.