Cityline Berlin Bigleaf Hydrangea - Flowering Shrub - Proven Winners Cityline Berlin Bigleaf Hydrangea. Hydrangea macrophylla'Berlin Rabe'pp#10912; None Color of Bloom: Pink to Green Hardy Zones 5-9, Mature Height: 12-36" Months of Bloom: Summer Hardy Zones 5-9, Mature Height: 12-36"