Hydrangea arborescens ‘Annabelle’ is an extremely showy plant which may require staking as flowers become exceedingly heavy particularly when wet.
Inflorescence: Enormous corymbs, 300mm across, opening white and aging to a creamy-green.
Pruning: H. arborescens ‘Annabella’ can be cut back hard in autumn as this species will flower on new growth. They should be hard pruned (all shoots, branches, twigs) to about 30cm from the ground every year.
Propagation: In May or June detach a runner from the parent plant whilst still small and pot up. The runner should have several inches of root and two or three pairs of leaves. Keep damp and place in the shade.
H. arborescens is a native species of the eastern U.S.A., from Iowa to Florida and Louisiana.
Found by J.C. McDaniel in Anna, Illinois, USA. Introduced to UK in 1907. Raised by Gulfstream Nursery, USA, before 1975
Zones: 3 to 9
Size: Medium (to 1.5m).
Color in neutral soil:
White, aging to creamy-green
Color in acidic soil with AI present:
White, aging to creamy-green (no change)
Ray florets: 3-5 sepals, entire, overlapping. 28mm diam.
Leaves: Simple, opposite and deciduous. Mid-green. Ovate. Margin: serrate. Apex: acuminate. Base: obtuse to cuneate. Venation pattern: pinnate. Texture of adaxial surface: smooth, glabrous; and abaxial surface: pubescent. 200mm l x 140mm w.