'Ruby Slippers' Oakleaf Hydrangea is another introduction from the National Arboretum's McMinnville shrub program, chosen for its small stature and showy display. The 9" upright blooms are white when they first appear in June and July. They rapidly turn pale pink and then age to a deep rose. The fall color is also attractive, in shades of red and purple. Hydrangea quercifolia 'Ruby Slippers' is a cross between H. Snow Queen™ and H. 'Pee Wee', which accounts for the upright flower panicles and the compact habit. Great plant, great name.