Hydrangea 'Merville Sanguine'
DEC FSHR SSH H.1.1m x 1.1m Blood red to wine purple mopheads with red foliage too. One of the darkest reds. The rule is blue with aluminum sulphate or turn pink with lime. Prune well back to a healthy shoot after flowers go brown or lightly prune back in mid to late winter. Too vigorous a pruning in late spring may mean fewer flowers in summer. Thin any weak shoots.