Hydrangea macrophylla ‘Gartenbaudirektor Kühnert’
synonyms: H. m. ‘Garden Baudirector Kühnert’ (misspelled).
Bred by F. Matthes, Germany, in 1926.
Hydrangea macrophylla ‘Gartenbaudirektor Kühnert’ is a medium-sized shrub giving excellent blue flowerheads in acidic soil but dity purplish flowers in alkaline soils. Prefers some some shade as flowers may scorch in hot sun.
Inflorescence: Mophead, 160mm across, with flattened corymbs. Good for cutting and drying.
Colour in neutral soil: Pink/Purple
Colour in acidic soil with Al present: Blue
Ray florets: 4 sepals, rounded, entire, overlapping, 40mm diam.
Zones: 6 to 9
Size: Medium (to 1.5m).
Leaves: Simple, opposite and deciduous. Mid-green. Broadly ovate to broadly elliptic. Margin: serrate. Apex: apiculate. Base: attenuate. Venation pattern: pinnate. Texture of adaxial and abaxial surfaces: smooth, glabrous, quite glossy. 110mm l x 80m