Hydrangea macrophylla, commonly known as bigleaf hydrangea, is a popular flowering shrub native to Japan and Korea. It is characterized by its large, rounded leaves and vibrant flower clusters, which can be blue, pink, or white, depending on the soil pH. This plant typically blooms in summer and can grow up to 6 feet tall. Bigleaf hydrangeas thrive in well-drained, moist soil and prefer partial shade. They are often used in gardens and landscapes for their ornamental value. Hydrangea macrophylla is also known for its ability to change flower color based on soil acidity, making it a unique choice for gardeners.