Hydrangea integrifolia
Hydrangea integrifolia
November 19, 2018
Hydrangea involucrata Hortensis
Hydrangea involucrata
November 19, 2018

Hydrangea involucrata


Hydrangea involucrata is a small, fascinating, relatively rare, member of the hydrangea genus. The flower buds, fully enclosed in involucral bracts, open with white ray florets surrounding bright mauve fertile flowers.

Inflorescence: Lacecap, 80mm across. Exquisite, intensely coloured small flowerheads.

Imported from Japan to Europe by Philip Franz von Siebold (1796-1866).

Synonyms: the Japanese name ‘Tama Ajisai’.

Zones: 8 to 9

Size: Small (to 1m).

Color in neutral soil:
Bright mauve fertile flowers surrounded by white ray florets.

Color in acidic soil with AI present:
No change.

Involucral bracts enclose the flower bud.

Ray florets: 5 sepals with acuminate tips, entire, wavy edges, overlapping, 20mm diam.

Leaves: Pointed, slender, bristly (like suede) – similar to H. aspera, but small 70mm l x 20mm w.