Hydrangea macrophyla ‘Merveille Sanguine’. Hydrangea Bloody Marvellous. “Bloody Marvellous” Deep red mophead. Flowers open blood red and slowly become deep wine purple. Leaves are a very deep green almost light chocolate colour. Hardy. Shade to partial shade, cool, moist, mulched soils. Deciduous. 1.2 x 1.2 m.