Pruning hydrangeas is a late summer topic

Pruning hydrangeas is a late summer topic

Pruning hydrangeas and when to do it is often a matter of late summer.

We have been enjoying the beauty of the long blooming hydrangeas this year. Now the question arises, as it does every year, whether it should be pruned now. The answer lies in the types of hydrangea. How to identify your hydrangea is a great video from Garden Answers that can help you find out.

In addition, a major factor is whether the species thrives on old wood or new wood. Flowering on “old wood” means that buds for next year are forming on wood grown this season. There are some varieties that bloom on both old and new wood. They are offered in patented or trademarked series.

Large leaf hydrangea

Large-leaved hydrangea (Hydrangea macrophylla) is one of the most popular. They are winter hardy in zones 6-9; But they can be killed on the ground in the cold winter. This means no flowers the following summer. These flowers are grown for their pink or blue flowers and bloom on old wood. Although this suggests not pruning them at all, these shrubs will grow large. If you need to prune them to control size, do so in July or early August. On mature shrubs, prune one-third of the buds at the base and shorten the other buds by about half. There is a hybrid series that thrives on both.

Hydrangea
Pink hydrangea

Oakleaf hydrangea

oakleaf hydrangea (Hydrangea quercifolia) Hardy in Zones 5-9; They are less susceptible to damage due to the cold of winter. But it also thrives on old wood; So if it is pruned at the wrong time or browsed by deer, flowering will be reduced.

Soft hydrangea

soft hydrangea (Hydrangea bushes), a native plant, hardy in zones 3-9 and blooms on new wood. Cutting them to the ground in late winter or early spring is a good idea. It will continue to bloom during the next season.

Hydrangea
Lilac hydrangea

Other hydrangeas

Panic hydrangea (Hydrangea paniculata) Hardy in Zones 3-8. It blooms on new wood. So it’s a good idea to cut them to the ground in late winter or early spring.

both of them mountain (Hydrangea serrated) And climbing (Hydrangea anomaly subsp. Petularis) Species bloom on old growth. Here’s an easy reference chart:

Annabelle Hydrangea: Native plant

In 1910, young Harriet Kirkpatrick was riding a horse through the woods near her home in Anna, Illinois, when she noticed a wild hydrangea. Its snowball-like flowers were much larger than the others. She dug it up, planted it with her family in their garden and shared cuttings with friends. In the 1960s, gardener J.C. McDaniel propagated it in his nursery. He named her Annabelle after the beautiful Anna who discovered her.

Choose your hydrangea

There are many different options for hydrangea plants. If you want to add one or more to your landscape, be sure to check the hardiness zone, light requirements, and plant width and height. Note that for large-leaved hydrangeas, one of the most popular cultivated plants for their pink or blue flowers, the color of the flower depends on the aluminum present in the soil, which depends on the soil pH.

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Carol Kagan

Carol Kagan is an accomplished gardener and author, and has been active in herbal organizations for more than 35 years. She has designed and maintained herb gardens and provided educational services on historic properties. She is an author Herbal samples. The book is a great resource for beginners who love herbs but aren’t quite sure how to get started; Or they have not succeeded in creating an herb garden.


More gardening columns by Carol Kagan


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