Hydrangea macrophylla ssp. serrata ‘Kiyosumi’
Discovered on Mount Kiyosumi, Chiba province, Japan. Bred by Yasaka Hayasha, Japan, in 1950.
Inflorescence: Lacecap, 104mm across, with purple fertile flowers surrounded irregularly with two-tone ray florets.
Colour in neutral soil: White and red ray florets, purple fertile flowers.
Colour in acidic soil with Al present: White and red ray florets, purple fertile flowers (no change)