Hydrangea paniculata Phantom AGM, 3LHydrangea paniculata Phantom is a showy garden hydrangea with massive white flower heads. These comprise loose, starry florets that begin as sparkling white and turn cream then flush pink as they mature. Ideal for giving much needed freshness to the garden in late summer and autumn. A recipient of the RHS AGM (Award of Garden Merit), for all round excellence in the garden.