“Pink Diamond’s” big blooms and strong color make for a winning combination.
The large flowerheads appear in upright, pointed clusters and open from bud, a creamy white and gradually turn to pastel shades of pink as they age. It is noted for producing dense, pyramidal, cone-shaped panicles (from 12″ long and 8″ across) flowers at the ends of red-stemmed branches. Flower panicles are excellent for fresh arrangements, dried flower arrangements or simply left on the shrub for winter interest. This is a fast-growing and hardy plant. It is one of the most winter hardy of the hydrangeas. Like all Hydrangeas, they prefer relatively moist, well-drained, moderately fertile, humus-rich soil, however they do become more drought-tolerant with age. Blooms summer through autumn. Bloom occurs on current season’s growth, so prune as needed in late winter to early spring.
With the return of the bold-is-beautiful style of landscaping, “Pink Diamond” should fit right into our modern landscape themes. It is probably best used as a specimen shrub much as crape myrtle is planted. It could be used as a background planting in a mixed border or even as a mass planting in the large landscape. It blooms best in full sun but will tolerate light shade. Unlike most hydrangeas, it has good drought tolerance, but bloom size will be reduced under drier conditions. Once established Pink Diamond hydrangea should be pruned hard in late spring to encourage long shoots with big flowers. The admonition “prune until you think you have killed it, and then prune some more” applies to this fast growing shrub. It is resistant to most insect and disease problems.
‘Pink Diamond’ Hydrangea is of the “PeeGee” hydrangea tribe. The old fashioned “PeeGee” was selected in England before 1880 from material originally introduced from Japan in 1861. “PeeGee” was all the rage during the Victorian era when it was planted extensively across the eastern half of the United States. Individual florets on these heads grow to 1-1/2 inches across. As the flowers age they turn a wonderful rich pink. By the time frost arrives, the sepals on the inflorescence will have turned tan colored. It grows at a medium rate, and under ideal conditions can be expected to live for 40 years or more.