How to Grow Oakleaf Hydrangea
Hydrangea quercifolia
Oakleaf Hydrangea is a US-native deciduous shrub with bold oak-shaped leaves that turn spectacular shades of red, orange, and burgundy in autumn. It produces large conical panicles of white flowers that age to pink. Thrives in partial shade with moist, well-drained soil. More drought-tolerant and shade-tolerant than other hydrangeas. Flowers on old wood; prune minimally.
Yearly Lifecycle
Care Essentials
Apply a balanced slow-release fertilizer in early spring. Unlike mophead hydrangeas, oakleaf types do not need acidic feeds for flower colour.
Watch For
- Powdery mildew in humid conditions
- Leaf spot in wet weather
- Aphids on new growth
- Deer browsing (less resistant than other hydrangeas)
Care Requirements
Light
Partial shade to full sun
Thrives in partial shade with morning sun. Tolerates full sun in cooler climates if soil stays moist. More drought-tolerant and shade-tolerant than other hydrangeas.
Watering
Consistent moisture, drought-tolerant for a hydrangea
Prefers moist, well-drained soil but is more drought-tolerant than mophead types. Water deeply during dry spells, especially in the first two years.
Fertilizing
Balanced slow-release in early spring
Apply a balanced slow-release fertiliser once in early spring. Not a heavy feeder. Unlike mophead hydrangeas, does not need acidic feeds for flower colour.
Pruning
Minimal, flowers on old wood
Flowers form on old wood, so only remove dead or crossing branches in late winter. Never hard-prune or you will lose next season's blooms. Keep pruning minimal to preserve natural form.
