Which common name is attributed to Hydrangea macrophylla?

The common name attributed to Hydrangea macrophylla is indeed Bigleaf Hydrangea. This name reflects the plant's most distinctive feature: its large, broad leaves. Hydrangea macrophylla is known for its lush foliage and its ability to produce large, round flower clusters, often seen in various colors depending on the soil pH. The term "bigleaf" aptly describes not only the size of the leaves but also signifies its preference for a more temperate climate, which is characteristic of regions where these plants thrive, such as parts of the Pacific Northwest.

Other names listed refer to different species within the Hydrangea genus. Panicle Hydrangea is commonly associated with Hydrangea paniculata, known for its cone-shaped flower clusters. Oakleaf Hydrangea refers to Hydrangea quercifolia, recognized for its unique oak-like leaf shape and appealing autumn color. Tree Hydrangea typically describes a form related to Hydrangea serrata that can grow in a tree-like form. Thus, the common name Bigleaf Hydrangea distinctly identifies Hydrangea macrophylla and encompasses its notable botanical features.