Oakleaf hydrangea grows best in partial shade, especially with morning sunlight and protection from harsh afternoon heat. It prefers fertile, organically rich, well-drained soil that remains consistently moist without becoming waterlogged. Good drainage is particularly important because excessive moisture can damage the roots. Provide enough space for the shrub to develop naturally and maintain good air circulation. Established plants can tolerate short periods of drought, but regular watering supports healthier foliage and better flowering.