Smooth Hydrangea
Smooth hydrangea (Hydrangea arborescens (Smooth Hydrangea)) is a deciduous shrub native to the eastern United States, valued for its large, round flower clusters and adaptability. Known for its ability to thrive in shady areas, it’s an excellent option for gardens in USDA Hardiness Zones 3-8, offering reliable blooms even in challenging conditions.
Flowers and Blooming Time: Smooth hydrangeas bloom on new wood, meaning the flowers develop on the current season’s growth. This ensures reliable blooming regardless of winter damage. The plant produces large, dome-shaped flower clusters, starting as light green buds that open to bright white or cream flowers in early summer. Popular cultivars like Annabelle and Incrediball are known for their showy blooms, which can last into late summer. As the flowers mature, they may fade to pale green or brown, providing seasonal interest into fall.
Uses: This hydrangea is perfect for mixed borders with companion plants, as a flowering hedge, or in mass plantings for stunning visual impact. It is also suitable for small gardens and patio containers. The blooms also make excellent cut flowers, adding elegance to floral arrangements. They can also be dried and preserved for use in wreaths and home decor, allowing you to enjoy their beauty year-round.
Growing Conditions: Smooth hydrangeas are versatile and thrive in partial shade or areas with morning sun and afternoon shade. They are more tolerant of wet soils than other hydrangea species, though they still prefer well-drained, loamy soil. Regular watering is essential, especially during hot weather, but once established, they display moderate drought tolerance. Adding organic matter, such as compost, helps improve soil quality and moisture retention.
Pruning and Maintenance: Since smooth hydrangeas bloom on new wood, they benefit from pruning in late winter or early spring to encourage vigorous growth. Deadheading spent blooms throughout the season encourages additional flowering and helps maintain a neat appearance.
