
(Hydrangea macrophylla)

Bigleaf hydrangea, Mophead hydrangea, French hydrangea, Garden hydrangea
Hydrangea macrophylla is a deciduous shrub that is native to Japan and Korea. It is known for its large, showy flowers that bloom in shades of pink, blue, and white.
3-6 feet (0.9-1.8 m)
Hydrangea macrophylla prefers partial shade to full shade. Too much direct sunlight can damage the leaves and flowers.
Hydrangea macrophylla prefers moderate to high humidity levels. It can benefit from regular misting or a humidifier.
Hydrangea macrophylla benefits from a balanced fertilizer applied in early spring and again in late summer. Use a fertilizer with a higher phosphorus content to encourage blooming.
Hydrangea macrophylla blooms on old wood, so prune in late summer or early fall after the flowers have faded. Remove any dead or damaged wood, and cut back the remaining stems to control the size and shape of the plant.
Common pests for Hydrangea macrophylla include aphids, spider mites, and scale insects. Diseases such as powdery mildew and leaf spot can also occur.
24-36 inches (61-91 cm)
Hydrangea macrophylla prefers consistently moist soil. Water deeply once a week, or more frequently in hot, dry weather.
Hydrangea macrophylla prefers cool to moderate temperatures, between 60-75°F (15-24°C). It can tolerate occasional dips in temperature, but not prolonged exposure to extreme heat or cold.
Hydrangea macrophylla blooms from early summer to fall.
Hydrangea macrophylla is considered moderately difficult to grow. It requires specific soil conditions and regular maintenance to thrive.
Hydrangea macrophylla is hardy in USDA zones 6-9.
The color of the flowers of Hydrangea macrophylla can be influenced by the pH of the soil. Acidic soil produces blue flowers, while alkaline soil produces pink flowers. White flowers are not affected by soil pH.