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!
Will hydrangeas that climb harm siding?
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.
How are climbing hydrangeas managed?
Cutting back hydrangea vines is simple; just remove stray shoots at the junction of the vine and a larger stem or just below spent blossoms. To encourage wholesome new growth, you can also prune off old or dead stems near the base of the plant.
Hydrangea vines should never be pruned without using clean, sharp pruners. To kill bacteria, clean the pruners with rubbing alcohol or a bleach-and-water solution.
Can a climbing hydrangea be kept in check?
Large, fragrant clusters of white blooms on climbing hydrangeas appear in late spring and summer against a background of heart-shaped, dark green leaves. These enormous vines easily cling to trees, columns, and other supports. Although a climbing hydrangea plant can be pruned to reduced heights, its mature height ranges from 30 to 80 feet (9 to 24 meters). It can be raised as a shrub as well.
Where should a climbing hydrangea be planted?
Hydrangeas that climb do best in full sun to partial shade. Although they need at least partial (or perhaps complete) shade at some point during the day in hot climes, this variety of flowering vine can endure quite a deal of shade, unlike other flowering vines.
Will roots from climbing hydrangeas harm the foundation?
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.
Choosing a climbing hydrangea
The lovely white blossoms in early summer are a nice addition on climbing hydrangeas, which are excellent practical climbers for covering shaded walls or fences. They may be permitted to climb up medium-sized to large trees. Hardy and simple to grow is the deciduous Hydrangea anomala subsp. petiolaris. Hydrangea seemannii and Hydrangea serratifolia, two evergreen climbing hydrangeas, provide year-round interest but require a warm, protected environment to flourish successfully. Despite being initially robust plants, they occasionally become a little slow. Although climbing hydrangeas are not picky about their soil, plants may struggle in very moist or chalky circumstances.
Buying a hydrangea
Climbing hydrangeas can be found in the “climbing plants” area of garden centers. They are often sold in pots of 2 to 3 liters. Plants purchased through the mail could be smaller.
When to plant
As soon as you buy your climbing hydrangea, plant it. Spring or autumn are the ideal seasons for planting. Plants grown in containers can be planted all year long as long as the ground is not frozen, flooded, or very dry in the summer.
Soil preparation
Climbing hydrangeas are typically planted in the soil at the base of walls or fences, which is in a rain shadow and so prone to drying out. Dig in an organic soil improver, such as garden compost or a manure-based soil conditioner, to the planting area rather than just the planting hole to aid in establishment. Per square meter, add a bucketful (yard).
Support
Even though they can cling to themselves, climbing hydrangeas typically need assistance getting started, such as wires or a trellis. Till the young shoots develop aerial roots that connect, confine them. Because mature plants are heavy, begin with a strong support.
How to plant
- Before planting, thoroughly water the pot.
- Allow around a 45cm (18in) spacing between the plant and the wall when planting against a wall or fence. Otherwise, a spacing of 20–30 cm (8–1 ft) is adequate.
- Create a planting hole that is three times bigger and as deep as the rootball.
- To prevent planting too deeply, the surface of the compost in the pot needs to be level with the surrounding soil.
- firmly in place
- Reduce soil drying out by mulching with a soil conditioner, but leave a 10-15cm (4-6in) gap around the base.
- Put water in, at least the amount found in a large watering can.
Walls damaged by climbing hydrangeas?
Will hydrangea climbing brick be harmed? No, brick won’t be harmed. The most that its suckers will do to bricks is leave a sticky, adhesive residue.
In the winter, do climbing hydrangeas lose their leaves?
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.
What is the duration of a climbing hydrangea’s bloom?
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.
Does hydrangea that climbs require a trellis?
Almost any structure will support climbing hydrangea growth. On a tree trunk or a stone structure, they will thrive. They may, however, be made to grow just as well on a wooden trellis or a fence with a little more effort.
The roots can easily cling to the wood’s surface. It will also serve as a sturdy support for the plant’s twining vines. Together with the aerial roots, these vines will support the plant. Because they are too slippery, they won’t have much success going on metal or vinyl.
Can hydrangeas climb a chain-link fence?
A chain link fence would allow any vine to grow into the neighbor’s yard, especially if that neighbor’s side gets more sunlight. Therefore, there will always be a problem until s/he is willing to share your plant. On the other hand, if you’re willing to care for your fence scrupulously at all times, you can stop a vine from tearing it down. But a lot of work would be required.
Indeed, climbing hydrangea clings to surfaces via aerial roots, so to keep it in place, you’d need to tie it up a bit and weave stems in and out of the fence.
Which climbing hydrangea is the best?
The climbing hydrangea Hydrangea anomala subsp. petiolaris is the most well-known and well-liked variety. Although initially slow-growing, it quickly becomes a tenacious climber that can cover outbuildings or enliven dark house walls.