Oakleaf Hydrangea (Hydrangea quercifolia) is one of the best picks for deep shade. It is also a low water hydrangea that actually does well in sandy soils.
A guide to the seven main types of hydrangeas including: mopheads, lacecaps, and oakleaf hydrangeas.
hydrangea quercifola - oakleaf hydrangea
Red and Pink and White Oak Leaf Hydrangea Ruby Slippers, Hydrangea quercifolia, Oak Leaf Hydrangea