Climbing hydrangeas are a great climbing plant for covering a shaded north or east facing wall or fence, or even the wall of a house, because of their huge, blowsy white blooms and elegant leaves.
The most popular variety of climbing hydrangea is Hydrangea anomala subsp. petiolaris, which has heart-shaped, dark green leaves that turn butter yellow in the fall and huge, white lacecap blooms in the early summer. It is hardy and simple to cultivate, but because it is deciduous, it loses its leaves in the winter after turning yellow in the fall. It has received The Royal Horticultural Society’s esteemed Award of Garden Merit (AGM).
Two more varieties of climbing hydrangeas are evergreen.
both Hydrangea serratifolia and Hydrangea seemannii. These require a warm, protected area to flourish. The Mexican hydrangea seemannii produces domed flower heads with greenish-white flowers encircled by white bracts. The Chilean and Argentinean hydrangea serratifolia has big, rough leaves and panicles of creamy white blooms.
Although the establishment and flowering of climbing hydrangeas can take several years, they are all robust plants. Give them a lot of space After 10–15 years, Hydrangea petiolaris can grow to a maximum height and spread of 12 m by 8 m; evergreen cultivars grow to a somewhat lesser size of 10 m by 3 m.
How can hydrangeas be trained to climb?
Early in the summer, this robust, woody deciduous vine bears huge, flat, white blooms in addition to lovely, dark green, glossy foliage. Climbing hydrangeas may flower in partial shade, unlike many other vines. It may grow up to 50 feet tall and, like ivy, attaches itself to walls, fences, and buildings via holdfasts or tiny rootlets. At first, climbing hydrangea can be a slow-growing vine, but once it gets going, it will take off and bring years’ worth of beauty. Hydrangeas that climb require a sturdy structure to climb on or up. Its strong growth can liven up a house corner or a north wall. The peeling bark, which is cinnamon-colored and interesting in the winter, is an extra draw.
Although climbing hydrangea is hardy to zone 5, colder areas in our location may require protection. Grow climbing hydrangea plants that you bought in the spring from a neighborhood garden center and plant after all risk of frost has passed. As long as the plant receives adequate watering, you can also plant in the summer. Plant in full sun (warmer locations) to partial shade in a spot with rich, well-drained soil that has been composted. Away from hot, dry areas. The climbing hydrangea will flower more in the sun and less in the shade. Plants should be spaced 5 to 10 feet apart.
Regular waterings and a covering of bark mulch should be used to keep the soil surrounding climbing hydrangeas evenly moist. Apply a layer of compost and a little amount of an organic plant food as fertilizer in the spring.
Similar to Boston ivy, climbing hydrangeas should be planted against masonry, stone, or brick walls, as well as against rot-resistant, unpainted wooden walls. The holdfasts will leave stains next to vinyl or regular wood siding, and rot and mold growth may occur on the siding as well. If growing near a building on a wooden or metal trellis, place the trellis at least three feet away from the building. After flowering, prune climbing hydrangeas to control their development. It does not spread as quickly as ivies do. With the growing, have patience. It typically takes a climbing hydrangea 3 to 5 years to reach the flowering stage. Perennial vines, according to an old proverb, “first sleep, then creep, then leap.” Except for animals, climbing hydrangeas have no severe pests.
Climbing hydrangea should be grown along a wall, structure, or fence where it can remain there permanently. It’s ideal for a neglected east or north wall along a garage or home side. Climbing hydrangea can be grown on arbors, pergolas, and trees. Just be certain the buildings are sturdy enough to carry the weight.
The green-leaved, white-flowered variety is available at most garden centers. ‘Miranda’ is a brand-new variegated leaf cultivar with white flowers and cream and green leaves.
Need a trellis for climbing hydrangeas?
Hydrangeas that climb do so using aerial roots that cling to surfaces. Instead of climbing up trellises, climbing hydrangea attach themselves best to surfaces with a rough texture, such as brickwork, masonry, and tree bark. They only leave behind a sticky residue, but they don’t actually harm the trees or buildings they climb. The greatest places for them to grow are on walls that face north or east or up big shade trees since they prefer part shade, and more specifically afternoon shade.
As long as the support is sturdy enough to handle the weight of a mature climbing hydrangea, it is possible to train climbing hydrangea to climb up trellises, arbors, or other structures. The aerial roots of climbing hydrangeas can more easily cling to wooden trellises and arbors than vinyl or metal. The majority of trellises won’t be big enough for climbing hydrangea when they get older, but they’re still useful for training young plants. For rocky slopes, climbing hydrangea can also be utilized as a groundcover.
What is the duration of the climbing hydrangea blooming period?
I don’t think you should try planting another vine because I think the climbing hydrangea was a wonderful choice for the growing circumstances in your garden. As long as the soil is well-drained and not very alkaline, climbing hydrangeas can grow in either full sun or partial shade. Too alkaline of a situation will cause the leaves to turn yellow. Once this vine reaches maturity, it can cover a sizable area, so routine pruning will probably be required once your fence is covered.
This vine may easily cling to fences like yours, as well as walls, trees, and other structures. Trellises must be well-built to hold the tall, heavy vines. Tendrils of climbing hydrangeas create a solid bond with practically any kind of surface. Because the vine will not simply detach and will leave bits of the tendrils glued to the surface when removed, it is advisable to avoid growing this vine against walls that require periodic routine care. In gutters, the vines may also spread.
Whether it is acceptable to let climbing hydrangeas climb up brick/stone walls or chimneys is the subject of conflicting advice. I have observed mature climbing hydrangeas flourishing without incident on chimneys and brick walls. But any issues will be concealed by the vines, which will hide the mortar. When a mature vine has covered a brick surface and mortar cracks appear, the vine needs to be taken out in order to perform repairs.
In your garden or other dry, shaded environment, climbing hydrangeas will grow more slowly and require more time to bloom. While the building may be casting a deeper shade, the honey locust tree offers filtered shade that is ideal for a climbing hydrangea. Given that your description suggests that your vines are healthy, it is most likely just a matter of time and some further care until they begin to bear blooms.
Normal climbing hydrangea growth is gradual, but a few years after planting, it picks up. The first flowers may not appear for several years after planting, even in ideal growing conditions. When the weather is dry, it would be a good idea to give your climbing hydrangeas some extra water because the area at the base of a shade tree is typically dry. Reduce pruning as much as possible because it can prevent the vine from blossoming. Fertilize the vines every year in the early spring. Within the next three to four years, it’s likely that you’ll receive some flowers. More sunlight encourages climbing hydrangeas to blossom profusely.
Call the Plant Information Service at the Chicago Botanic Garden at 847-835-0972 if you have any inquiries about plants or gardening.
Can a hydrangea be taught to climb?
Grow Hydrangea petiolaris in shade or moderate shade with wet but well-drained soil. After a season of growth, the shoots will form self-clinging aerial roots, which you may then train along a wall or robust fence or at first onto galvanized wires or trellis. Keep the soil from drying out, especially during warmer weather. Every year, mulch in the spring with compost or well-rotted manure. After summer blossoming, prune. Both Hydrangea seemannii and Hydrangea serratifolia require a warm, protected location.
What hydrangea varieties climb?
Petiolar Hydrangea anomala a strong climbing vine that uses aerial rootlets to adhere to surfaces. It starts out with a slow-growing, shrubby habit before becoming fairly vigorous and producing long, quickly-growing stems. In the summer, stunning white lacecap blossoms cover the lush green foliage.
Is hydrangea that climbs invasive?
I planted a sizable climbing hydrangea at the base of a walnut tree that we had to chop down this fall this past spring. I’d like to retain the plant in its current location because it was really happy there, but I’m not sure what I should build to support it as it climbs. Have you have any recommendations?
ANSWER:
A tree is the best (and most natural) support for Decumaria barbara (woodvamp), as you undoubtedly already know. It appears to be a tidy, non-invasive vine that can be utilized as a climbing vine or a ground cover, as its stems develop climbing rootlets. However, we discovered that the climbing hydrangea requires climbing in order to blossom from this North Carolina State University Horticulture website. Of course, it may develop into a strong trellis, and we’d advise building it in the shape of an arch so that the structure has ground support on both ends. It would look great against a nice stone wall, but that would be a labor- and resource-intensive vine support. You might think of building a wall or even a tiered wall out of regular concrete blocks if you needed to separate a place or even hide another area of your land. Even a chain-link fence might support it because it is sturdy and will be rapidly hidden by the vines.
Despite the fact that you likely already know more about the plant than we do, we did manage to confirm that it is deciduous. To keep it within the confines of the space you have and the assistance you can provide, it would probably be a good idea to tidy it up by pruning and trimming back during the dormant season. You have it in the appropriate spot because it is a native of Tennessee!
Are climbing hydrangeas capable of growing horizontally?
Hydrangea vines that climb will climb anything, but you might want to watch where you allow them to grow. Letting these vines grow on something that can’t support their weight could lead to damage because they can get enormous and heavy.
the positive news There are several suitable growing areas that you may pick from for your climbing hydrangea vines.
Trellis
Many gardeners who plant climbing vines choose to use trellises. Trellises come in a wide range of sizes and styles, making it simple to find one that complements your garden’s or landscaping plan.
Climbing hydrangeas and other viney plants will cling to the trellis’s many rungs and frequently weave their way through different portions for increased support.
There are a few things to think about when growing your climbing hydrangea vines on a trellis. Hydrangea climbing vines have a tendency to get very big and heavy. Because they are more difficult to reinforce if necessary later, you should choose a heavy-duty trellis up front.
Pergolas
Another excellent option for vining plants is a pergola. Outdoor structures called pergolas, which are typically made of wood but can sometimes occasionally be made of metal, can serve as both a platform for climbing plants and a shaded area for seating. Slats along the top of pergolas are common features that vining plants can grasp onto as they develop and ascend.
Because they typically provide more support than a typical trellis provides, pergolas are a particularly excellent alternative for the climbing hydrangea. Your pergola should have no trouble withstanding the weight of your climbing hydrangea vines if it is constructed properly.
Walls
The climbing hydrangea can climb up your external walls, unlike many flowering vines. The aerial roots of the climbing hydrangea allow it to cling to flat objects and climb up them. Try to find a wall with a northern or eastern exposure when choosing a wall to grow your climbing hydrangea vines on. These instructions will provide the plant enough sunshine without exposing it to direct sunlight.
As long as you prevent the climbing hydrangea from causing any harm, having it climb up your wall might be an excellent idea. You must cut back the vines as they approach gutters, your roof, or any other exposed attachments to prevent them from unintentionally ripping anything off your house.
Trees
Your climbing hydrangea vines can thrive in a naturally occurring environment thanks to trees. You can teach your climbing hydrangea to wrap around a vehicle if your tree has a broad exposed trunk, adding a lovely touch to your landscaping. There is no concern that the climbing hydrangeas will become too heavy for the tree to maintain because most large trees have robust root systems.
When climbing a tree, you might want to keep your hydrangea vines pruned back. The tree could sustain damage if the vines get to the branches and take over. It shouldn’t hurt your tree if you allow your climbing hydrangea to take up residence on a few of the lower branches, but if it starts to soar too far, it might outstay its welcome.
Fences
You may give your garden or landscape a tidy appearance by growing your climbing hydrangea vines on a fence. Most fences, when properly placed, are strong enough to support your climbing hydrangea without collapsing under its weight. The climbing hydrangea may thread through cracks or gaps in many fences as it ages, but a flat-sided fence will also do the trick.
Once they run out of vertical room, the climbing hydrangea vines on your fence may begin to grow horizontally. You might need to keep the plant pruned back depending on how much of your fence you want covered with the plant. On the other hand, if you have any neighbors you want to keep out, growing a few climbing hydrangea vines along your fence can serve as a semi-private barrier.
Shrub Growing
Climbing hydrangeas can also be grown as a shrub if you don’t have any suitable vertical growing spaces for them. A climbing hydrangea will fold over on itself to form a kind of arched shrub if it is planted in a spot without access to any supporting structures. Even without something to hold onto, these shrubs can develop into something that is around four feet tall.
Your climbing hydrangea may take some time to develop into a shrub, but you can train it by bending and tying it in the direction you choose. To ensure that growth doesn’t get out of control, these shrubs will need to be pruned annually. They will begin to spread as a ground cover if not kept properly pruned.
Ground Cover
The final option for your climbing hydrangeas is ground cover. The vines will fold over on themselves to provide a vertical look if there is no supporting framework. Your climbing hydrangea can be trained to grow horizontally to prevent this. By denying the plant any other possibilities for growth, some people utilize tie-downs to encourage this horizontal growth.
Hydrangea vines that climb can cover a lot of ground. They will expand horizontally in accordance with how high they grow vertically. Trimming could be required if you wish to keep them out of certain locations.