Bigleaf Hydrangea
Bigleaf hydrangea (Hydrangea macrophylla) is a popular ornamental shrub known for its large, colorful flower heads. Native to Japan, it thrives in USDA Hardiness Zones 5-9, making it suitable for temperate climates. This hydrangea type is widely appreciated for its versatility and aesthetic value in gardens, with the added benefit of its flowers changing color based on soil pH. Bigleaf hydrangeas are divided into two varieties:
Mophead Hydrangeas: Characterized by their large, rounded flower clusters. These are the most recognizable and popular type, often seen in shades of pink or blue.
Lacecap Hydrangeas: Featuring flatter clusters with small fertile flowers in the center surrounded by larger sterile flowers, giving them a more delicate appearance.
Soil pH and Flower Color: The soil pH can affect the flower color, with acidic soil producing blue flowers and alkaline soil producing pink flowers.
Uses: Due to their showy blooms, they’re often used as specimen plants or in perennial and shrub borders with companion plants. They also work well in containers and 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.
Care and Maintenance: Bigleaf hydrangeas prefer partial shade, with morning sun and afternoon shade being ideal. They require consistent moisture, especially during hot weather, and benefit from well-drained, loamy soil enriched with organic matter. Proper pruning is essential—these hydrangeas bloom on old wood, so pruning should be done after the flowers fade but before new buds form for the following season.
All parts of the plant are considered poisonous if ingested due to the presence of hydrangin, a cyanogenic glycoside. It’s generally safe for humans to handle, but ingestion can cause discomfort. Hydrangea is considered toxic to pets, including dogs and cats.
