Ideal for small gardens, Hydrangea quercifolia 'Ruby Slippers' (Oak Leaf Hydrangea) is a compact, well-rounded deciduous shrub noted for its showy foliage and cone-shaped flowers. Blooming in early to mid-summer, this Oak Leaf Hydrangea boasts larger than average conical flower heads, up to 9 in. long (22cm). Opening white, blossoms take on delightful pink tinges as the season progresses and turn red as fall approaches. They are held upright above the lush foliage of deeply-lobed, oak-shaped, deep green leaves. The leaves turn mahogany-red as the nights grow cooler in the fall.