Proper pruning practices to share with clients for their hydrangeas

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Hydrangeas are a fantastic addition to any panorama with their eye-catching blossoms and customarily hardy nature.

Whereas having quite a few styles of this shrub tends to be a bonus, it may be a downside in terms of your prospects understanding the best way to correctly care for his or her hydrangeas.

In case your shoppers have gotten perplexed in regards to the contradictory info as to when they need to be pruning their hydrangea, take the time to coach them on the best way to care for his or her explicit selection or provide to deal with the duty your self.

‘Previous wooden’ versus ‘new wooden’

The primary supply of confusion for householders is whether or not they’re studying pruning recommendation for hydrangeas that bloom on previous wooden or new wooden. Relying on which kind of wooden the shrub blooms on will decide when somebody ought to go about pruning their plant.

The difficulty is a few hydrangeas bloom on previous wooden whereas others bloom on new wooden. When flowers develop on final 12 months’s buds, that is thought-about previous wooden. Flowers that seem on the present 12 months’s development is outlined as rising on new wooden.

Hydrangeas that bloom on previous wooden needs to be pruned shortly after the present flowering to be able to keep away from eradicating creating buds.

“The following 12 months’s flower buds start forming in August,” says Kerry Smith, Alabama Cooperative Extension House Grounds workforce chief. “If a shrub blooms on new wooden, prune in late winter or in spring to stimulate new development for added blooms.”

If a home-owner incorrectly assumes that their hydrangea blooms on new wooden, however it really flowers from previous wooden, they run the danger of slicing off all of the dormant flower buds and leaving their shrub flowerless for the season.

Some cultivars akin to Endless Summer flower on each previous and new wooden. In line with the Infinite Summer time website, these hydrangeas require little or no pruning and people ought to keep away from over-pruning as it will result in much less blooms.

Know the species and cultivar

There are six primary species of hydrangeas you’ll discover in prospects’ landscapes. Beneath is a breakdown on every one and whether or not they flower on previous wooden or new wooden, together with some well-liked cultivars of every species.

Let’s Dance ‘Blue Jangles’
Picture: Confirmed Winners

Bigleaf hydrangea (Hydrangea macrophylla)

Native to Japan, the bigleaf hydrangea is the most well-liked sort of hydrangea present in america. There are two primary forms of bigleaf hydrangeas: mophead and lacecaps.

Mopheads are the enduring globular flowers that tends to be both vivid blue or pink, relying on the pH of the soil. Lacecaps have tiny buds within the heart which can be fertile after which are surrounded by bigger, sterile flowers.

Cultivars within the Infinite Summer time assortment are bigleaf hydrangeas. A few of the different well-known sequence for these species embrace the Abracadabra sequence, Cityline sequence and Let’s Dance sequence. ‘Nikko Blue’ is a very traditional bigleaf hydrangea cultivar.

Conventional bigleaf hydrangeas needs to be pruned after they’ve bloomed in the summertime.

Mountain hydrangea (Hydrangea serrata)

Previously thought-about a subspecies of bigleaf hydrangeas, the mountain hydrangeas at the moment are thought-about a species of their very own. This Japanese-native species is especially winter hardy and has related blooms to the lacecap, however they’re smaller and extra delicate in look.

The mountain hydrangea is extra compact with a rounded behavior in comparison with the bigleaf hydrangea. ‘Bluebird,’ ‘Diadem,’ and the Tuff Stuff sequence are all notable mountain hydrangea cultivars.

Mountain hydrangeas needs to be pruned after they’ve bloomed in the summertime. 

Easy hydrangea (Hydrangea arborescens)

This sun-loving species of hydrangea is native to the jap United States. It has heart-shaped leaves and the clusters of tiny fertile flowers can turn into fairly massive.

The cultivar ‘Incrediball’ was bred for stronger stems to stop the flowers from drooping. Different well-known easy hydrangea cultivars embrace ‘Annebelle,’ Invincibelle Spirit’ and ‘Grandiflora.’ 

Easy hydrangeas needs to be pruned within the late winter or early spring earlier than development begins.

Panicle hydrangea (Hydrangea paniculata)

Picture: Confirmed Winners

Often known as PG or PeeGee hydrangea, this shrub is native to China and Japan and will get its identify from its elongated (or panicle) flower heads. The leaves are broadly oval. The panicle hydrangea can develop into a typical tree type.

Frequent panicle hydrangea cultivars embrace ‘Bobo,’ ‘Limelight’ and ‘Pinky Winky.’

Panicle hydrangeas needs to be pruned within the late winter or early spring earlier than development begins. 

Oakleaf hydrangea (Hydrangea quercifolia)

One other native of america, this hydrangea originates from the Southeast. Its identify comes from how its leaves look much like that of an oak. The leaves additionally flip shades of crimson and bronze within the fall. These hydrangeas have a looser behavior and even bigger leaves than different hydrangea species.

Its blooms are related in form to the panicle hydrangea with a cone-shaped clusters. A few of the notable oakleaf hydrangea cultivars are ‘Munchkin,’ ‘Snowflake’ and ‘Ruby Slippers.’

Oakleaf hydrangeas needs to be pruned after they’ve bloomed in the summertime.

Climbing hydrangea (Hydrangea anomala petiolaris)

A vigorously rising vine that does nicely in partial shade to full shade, this hydrangea has oval leaves and lacecap type blooms in the summertime. This hydrangea has grown in reputation due to is comparatively non-aggressive nature.

‘Miranda’ and ‘Firefly’ are a number of the cultivars accessible for this species.

Climbing hydrangeas needs to be pruned after they’ve bloomed in the summertime.

Encourage your prospects to avoid wasting their plant labels transferring ahead so there isn’t any detective work required for subsequent 12 months’s pruning.

In case your consumer continues to be unsure as to what pruning they need to try, the University of Maryland extension says that no pruning is best than the unsuitable sort of pruning.

The most secure type of pruning for hydrangeas is to deal with eradicating lifeless flowers, winter-killed wooden and lifeless or previous stems to rejuvenate the plant.


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