What Is a Hydrangea Bush?
A hydrangea bush is a popular shrub with large flowerheads, or clusters of small flowers, on the ends of its stems. There are a number of species in the genus Hydrangea, but the most commonly grown species, H. macrophylla, is known for having flowers that can be blue or pink, depending on the acidity of its soil. It is commonly grown as a border plant in warmer climates. In areas where hard winters or deep freezes are common, it is usually grown as a potted plant or in greenhouses.
