The beautiful flowers produced by this plant is what makes these so popular. Most put on a showy display from early spring all the way into fall. The large flowers come in a variety of shapes, colors, and sizes. Hydrangea blooms can be pink, blue, red, white, purple and green! The flowering shrubs can grow in partial shade to full sun.Hydrangeas are summer's floral star and create a powerful impact with their globe shape adorned with dozens of ruffled, velvety petals.