If you want a hardy, big-blooming shrub that lights up summer through fall, Hydrangea paniculata 'Pinky Winky Prime™' delivers. This panicle hydrangea (Panicle Hydrangea 'Pinky Winky Prime™') produces large, cone-shaped flower clusters that open creamy white and steadily blush to deeper pink as the season advances, giving you multi-tone color on the same plant.
Give it full sun to part shade for the strongest stems and best flowering. In warmer climates, morning sun with some afternoon shade helps keep the foliage looking fresh. Plant in moist, well-drained soil and water deeply during establishment and in hot, dry spells so blooms stay full and foliage remains crisp and green.
This is a woody hydrangea that blooms on new growth, so you can prune in late winter or early spring without sacrificing the season's flowers. Use it as a bold specimen, in mixed shrub borders, or in a loose hedge for a long season of color. The spent flower panicles can add texture into fall and early winter if you leave them in place, or you can cut some for fresh or dried arrangements.
Plan space for a mature size of about 72-108 inches tall and wide. Mulch the root zone to moderate moisture and temperature, and site it where it can develop its broad, arching form without crowding nearby plants.