Bigleaf Hydrangea (Hydrangea macrophylla) is a classic Willamette Valley shrub with showy mophead or lacecap summer blooms that can range from blue to pink depending on soil pH, and it performs best in morning sun or dappled afternoon shade with rich, evenly moist, well-drained acidic to neutral soil. It blooms on old wood so prune lightly after flowering, tolerates valley winters in sheltered spots, and is offered in compact and larger cultivars ideal for borders, containers or foundation plantings.