Hydrangea involucrata ‘Hortensis’
synonyms: H. i. ‘Hortensia’
Imported from Japan to Europe by T. Smith in 1867.
Hydrangea involucrata ‘Hortensis’ is a slow-growing, fragile, small shrub with weak stems. Propagation by suckers.
Inflorescence: Lacecap, 90mm across. The flowerhead is very irregular and has a tendency to droop. The involucral bracts open to reveal semi-double ray florets surrounding pink complete flowers.
Colour in neutral soil: Pink fertile flowers with white ray florets
Colour in acidic soil with Al present: Pink fertile flowers with white ray florets
Ray florets: 8 sepals, arranged in a whorl, rounded, entire, overlapping, 15mm diam.
Zones: 5 to 9
Size: Medium (to 1m).
Leaves: Pointed, slender, bristly. Venation pattern: pinnate, veins faint and dark on adaxial surface, conspicuous and light on reverse. 140mm l x 70mm w.