Glowing blood-red mophead flowers that age to wine purple and rich dark chocolate foliage make this hydrangea stand out in the crowd. The flowers will be rich red in alkaline (lime) soils and deep purple in acidic soils. Plant in the semi-shade shrub border and makes a stunning container plant. Also known as 'Merveille Sanguine' and 'Bloody Marvellous'. 1m x 1m.