Hydrangea serrata ‘Intermedia’ is unusually vigorous and easily grown. Its decorative value is not very high compared to other cultivars, as the ray florets twist over and face the ground immediately after pollination.
Inflorescence: Lacecap, 150mm across, with white sepals which turn crimson before inverting.
Synonyms: H. japonica ‘Intermedia’, H. serrata ‘Acuminata’
Origin Japan. Imported by Michael Haworth-Booth circa 1950. Native to Korea and Japan.
Zones: 6 to 9
Size: Medium (to 1.5m).
Color in neutral soil:
White, aging to crimson
Color in acidic soil with AI present:
White, aging to crimson (no change)
Ray florets: 3 or 4 sepals, rounded, serrated, overlapping, 35mm diam.
Leaves: Mid-green turning burgundy in autumn, serrated, acuminate with elongated tip, 130mm l x 70mm w.