The Incrediball® hydrangea (Hydrangea arborescens ‘Abetwo’ Incrediball) is a broadleafdeciduous flowering shrub. Like Annabelle hydrangea, it is a cultivar of the smooth hydrangea (Hydrangea arborescens) that is hardy and flowers on new wood, but Incrediball has stronger branches and bigger flower heads than the Annabelle. The cultivar name is ‘Abetwo,’ while “Incrediball”—notably, not “incredible”—is a trademark name. “Incrediball” was presumably chosen as the name to trumpet the impressive size (up to 12 inches) of the “balls” of flowers.

Incrediball hydrangea plants can be used in the landscape in a number of ways. These shrubs have broad rounded, sharply toothed, dark green leaves and are attractive enough to be used singly as specimen plants. Some gardeners choose to grow them en masse along a property line to form a border, while others include them in foundation plantings. Their shade-tolerance makes them suitable for woodland gardens, although they produce larger flower heads in full sun than in partial shade. Incrediball hydrangeas are plants that attract butterflies.

These shrubs are considered fast-growing and are typically planted in fall. In favorable conditions, they can be expected to live for 20 years.

Hydrangeas contain hydrangin, which is toxic to humans1, and toxic to dogs, cats, and horses