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When I started working at Gardener's Supply in the 1990s, my Vermont backyard was pretty green—with grass. Today, there's just a tiny bit of the original lawn left. Most of the available space has given way to trees, shrubs, perennials, annuals and stonework. Watch a slideshow of my garden in Burlington, VT.
In addition to my work at Gardener's Supply, I work in the gardening division at Church Hill Landscapes. In that role, I maintain dozens of gardens and learn a lot in the process. I believe that all gardening is good gardening.
Blushing Bride is a bigleaf hydrangea (Hydrangea macrophylla), so it should be pruned in summer, after it blooms. In less acidic soils, it blooms pink. To enhance the pink color, use horticultural lime.
The Limelight hydrangea blooms on new growth, so it should be pruned in late winter, before new growth begins. Although the florets look similar to those of bigleaf hydrangeas, Limelight has teardrop-shaped bloom clusters and blooming starts later in the summer.
WHEN do you prune hydrangeas? Well, it depends.
Some hydrangeas bloom on new growth and should be pruned in late winter or early spring, before the shrub begins active growth.
These include several varieties that have become quite popular: Limelight, Quickfire, Burgundy Lace, as well as the classic "snowball" types, such as Annabelle. Another one that can be pruned in late winter is the classic PG or PeeGee, which produces creamy white flowers in late summer that age to rosy pink.
The botanical names help identify the winter-pruned varieties: Hydrangea arborescens and H. paniculata. For more on this topic, read Early Season Pruning.
Blue Billow should be pruned in summer, after it has finished blooming. To enhance the blue color, use a soil acidifier (garden sulphur). To learn more about hydrangea color, read the article
Growing Blue Hydrangeas.
Most of the other hydrangeas should be pruned in summer, once they have finished blooming. Most of these bloom on what's called "old wood" — growth from the year before. If you prune them in early spring, you risk cuting off the dormant flower buds. By pruning right after the blooms have faded, you allow the plant time to set buds for the next year.
Oakleaf (H. quercifolia) and bigleaf hydrangea (H. macrophylla), including Nikko Blue and all the other pink- and blue-flowering cultivars, bloom from buds set the previous year. If they need pruning to maintain size or shape, do it in the summer, preferably before August.
The so-called ever-blooming hydrangeas, such as Endless Summer and Blushing Bride, should be treated the same. These bigleaf hydrangeas are unique in that they bloom on old wood and new wood.
Last updated: 12/15/17
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