'Tardiva' hydrangea is a vigorous, upright shrub with a fast-growing habit that reaches 8–12 feet tall. Large, pointed panicles of creamy white flowers bloom from late summer into September, gradually blushing soft pink as they age. As the blooms mature, their weight creates gracefully arching branches. One of the latest hydrangeas to flower, it's an excellent choice for extending color and interest into the fall garden.