This deciduous shrub features an upright, rounded habit and thrives in USDA zones 5-9, making it an excellent choice for gardens with mild to moderate winters. Preferring temperatures ranging from 55-75°F, it displays stunning deep blue mophead flowers under acidic soil conditions and shifts to pink hues in neutral to alkaline soils. Its deep green leaves turn a subtle yellow in fall, adding seasonal interest to the garden. Adaptable to moist, well-drained soils enriched with organic matter, this hydrangea grows up to 3-5 feet tall, with a similar spread. The plant is moderately deer-resistant and performs best in partial to full shade. The stems showcase an elegant purplish-black coloring, adding an extra layer of beauty to its overall rounded form. Perfect for borders, containers, or as a striking specimen plant.