Lovely 'Ruby Slippers' hydrangea has white summer flowers that turn pale pink, then deep to rose, and are held upright above the foliage. Flowers may reach 9" in length. The dark green foliage turns mahogany-red in fall. The compact habit and large upright inflorescences make it well-suited to residential gardens. Developed by the US National Arboretum from a cross of 'Snow Queen' and 'Pee Wee'.