Bigleaf Hydrangea
Hydrangea macrophylla
A compact deciduous shrub featuring lush, vibrant green, ovate leaves with serrated margins arranged in opposite pairs, forming a dense, rounded mound.
- Light
- Partial shade, preferring 3 to 6 hours of direct morning sunlight with protection from harsh afternoon heat.
- Water
- Requires regular watering to maintain consistently moist soil, about 1 inch of water per week; drought sensitive.
- Growth
- Deciduous perennial shrub with a rounded, bushy growth habit, reaching a mature height and spread of 3 to 6 feet.
Care instructions
Provide morning sun and afternoon shade in warmer climates, along with consistent moisture and well-draining soil rich in organic matter. Apply a balanced slow-release fertilizer in early spring.
Growing details
Sunlight
Partial shade, preferring 3 to 6 hours of direct morning sunlight with protection from harsh afternoon heat.
Watering
Requires regular watering to maintain consistently moist soil, about 1 inch of water per week; drought sensitive.
Soil
Rich, moist, well-draining loam or organic-heavy soil with an acidic to neutral pH range of 5.5 to 6.5.
Hardiness zone
USDA zones 6 through 9
Growth habit
Deciduous perennial shrub with a rounded, bushy growth habit, reaching a mature height and spread of 3 to 6 feet.
Bloom season
Blooms from late spring through late summer with large mophead or lacecap inflorescences in shades of pink, blue, purple, or white depending on soil pH.
Propagation
Propagated successfully through softwood stem cuttings taken in late spring or early summer.
Common pests & issues
Susceptible to powdery mildew, leaf spot, and botrytis blight, particularly in humid conditions with poor air circulation; manage by avoiding overhead watering.
Similar species
Smooth Hydrangea (Hydrangea arborescens), which can be distinguished by its heart-shaped leaves and native North American origin.