The Best Plants To Protect The Site From Noise. How To Create A Sound Absorbing Hedge? Photo

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The Best Plants To Protect The Site From Noise. How To Create A Sound Absorbing Hedge? Photo
The Best Plants To Protect The Site From Noise. How To Create A Sound Absorbing Hedge? Photo

Video: The Best Plants To Protect The Site From Noise. How To Create A Sound Absorbing Hedge? Photo

Video: The Best Plants To Protect The Site From Noise. How To Create A Sound Absorbing Hedge? Photo
Video: 7 Best Indoor Noise Blocking Plants 2024, March
Anonim

"Green walls" of correctly selected plant species always create a very cozy atmosphere and a special microclimate in the garden. In addition, they protect against wind, street noise and dust. If the main task is to protect the site from noise, then the hedges should be multi-tiered and consist of two, three or even four rows of plants. The simplest noise-protective green fence is two rows of western thuja (they are not planted in three rows). But mixed multi-row hedges look much more effective at "dampening" noise and more interesting. What plants to choose for each tier of a multi-row hedge, we will consider in the article.

The best plants to protect the site from noise
The best plants to protect the site from noise

What plants absorb sound?

Research by scientists has shown that plants of certain species absorb up to 25% of noise, and also scatter and reflect it up to about 75%. Conifers are more active in picking up noise throughout the year. It was experimentally found that spruce, berry yew and western thuja reduce the sound level by 7 dB, and pine - by 9 dB.

It has also been established that of deciduous species for noise-trapping hedges, the most suitable are: white acacia, cotoneaster, hawthorn, Berlin poplar, lilacs, maples, small-leaved linden, hornbeam. Deciduous plants are able to reduce the sound level by a maximum of 6 dB, but only in spring and autumn. In winter, these figures naturally decrease.

The top tier of a sound-absorbing hedge may consist of free-growing trees such as limes, hornbeams, pines, or spruces. The middle tier is made up of freely growing junipers or sheared tall shrubs, various types of lilacs and hawthorns. The lower tier is made up of low shrubs, such as barberries, cotoneaster or junipers.

To create such a hedge, you will need a lot of space. More compact - mixed hedges, in which each tier is cut.

Let's take a closer look at the list of plants from which each tier of a multi-level sound-absorbing hedge is created.

The best plants for the lower tier of a hedge "from noise"

1. Shiny cotoneaster

Brilliant cotoneaster (Cotoneaster lucidus Schltdl.) Is a deciduous, frost-resistant upright shrub up to 2 m high. This type of cotoneaster came into vogue in horticulture at the beginning of the 19th century, when it was used to create "green walls".

Brilliant cotoneaster (Cotoneaster lucidus Schltdl.)
Brilliant cotoneaster (Cotoneaster lucidus Schltdl.)

In nature, the brilliant cotoneaster is found only in the Baikal region. It grows on rocky slopes and “chooses” larch as neighbors. Sometimes forms dense thickets.

A very unpretentious plant. Grows well in sunny areas and in shade. True, in the bright sun, the leaf blades lose their shine.

The crown is spreading, when trimmed it becomes dense and compact. The growth rate is high. Leaves are elliptical, dark green, up to 4 cm long. The leaf blade is dense, pointed.

The flowers are small, inconspicuous, white-pink, fragrant, collected in corymbose inflorescences. Flowering occurs in late May and lasts about a month. Black fruits appear in September.

Prefers well-drained sandy soil. It grows more slowly on heavy clay soils and in autumn its foliage does not acquire scarlet, purple and orange hues. It reacts poorly to stagnant water and excessive watering.

Experts advise to start planting cotoneaster in early spring, even before the buds begin to grow. The distance between young plants is from 30 to 40 cm. It is not advised to plant cotoneaster in two or three rows, this leads to a slowdown in growth and the possibility of fungal diseases. The height of the lower tier of the brilliant cotoneaster is usually kept from 0.7 to 1.2 m.

To make the crown of the bushes dense, the cotoneaster is trimmed immediately after they take root after planting. Usually, haircuts are done three times per season. For good lighting of the lower part of the bushes, the crown is cut in such a way that its upper part is 15 cm narrower than the lower one.

Brilliant cotoneaster is ideal for multi-row hedges, as its foliage is very high, and it begins to "wake up" early enough, in early April, and the leaves are kept in the crown until the end of October.

2. Barberry gray-white

Gray - white barberry (Berberis candidula CKSchneid.) Is an evergreen, frost-resistant, very light-loving shrub 0.8 - 1.2 cm high. It has been used in horticulture since the 19th century. Homeland - Central China. Occurs in the mountains up to an altitude of 3000 m.

Gray-white barberry (Berberis candidula CKSchneid.)
Gray-white barberry (Berberis candidula CKSchneid.)

The crown is very dense, compact, semicircular. Growth rate is medium to slow. Well-developed strong root system. The bark is relief, slightly rough, light with yellowish tints. Length of thorns up to 2 cm. Shoots are smooth, branching at an acute angle.

Leaves are elliptical, almost without petioles, leathery, bright green and shiny. The edge of the leaf blade is much bent, finely toothed, prickly. The lower part of the leaf blade is whitish, as it is covered with a waxy coating. The length of the leaf blade is up to 3 cm.

The flowers are golden yellow, solitary, bright, look like "small roses". Flowering begins in May and lasts about 3 weeks. Dark blue fruits are covered with a waxy coating. Reproduces well by cuttings, dividing the bush, seeds.

The gray-white barberry is not picky about soils, but it develops more actively on weakly alkaline rich soils. The plant is drought-resistant. Loves places protected from the wind. Practically does not need a haircut, but tolerates it perfectly.

Experts advise planting barberry in early spring and have two bushes per 1 running meter.

3. Medicinal laurel

Medicinal laurel (Laurocerasus officinalis M. Roem.) Is an evergreen shrub or small tree up to 6–8 m high. In the Moscow region it does not grow above 1.3 m.

Medicinal Laurel (Laurocerasus officinalis M. Roem.)
Medicinal Laurel (Laurocerasus officinalis M. Roem.)

These beautiful ornamental foliage plants were planted in the Moscow Botanical Garden in 1966. They were brought from Adjara. In nature, this type of cherry laurel is found in mountain forests, "climbing" to a height of 2500 m above sea level, often forms dense, almost impenetrable thickets. Their homeland is the Caucasus, the Balkan Peninsula, Iran. There are specimens that are more than 100 years old.

The crown is compact, densely branched, symmetrical. Growth rates in cooler regions are moderate to slow. The bark is embossed, dark gray, often almost black. The leaves are beautiful, resembling camellia or laurel leaves. The leaf blade is solid, oblong, dense, glossy. The length of the leaf blade is up to 20 cm.

Small, whitish flowers are collected in dense racemes (5-13 cm). Flowering begins in April and lasts about a month, but in the Moscow region, cherry laurel blooms in June and this does not happen every year. The root system is powerful, the main roots go down to a depth of 200 cm.

The soil for planting cherry laurel is prepared from turf, sand and humus (1: 2: 2), pH = 7.0–7.5.

Possesses high shade tolerance. The plant is easily propagated by seeds, layering and cuttings. To all the advantages of medicinal laurel (pharmacy), one can add that it is also a valuable medicinal plant.

Of course, young plants need to be covered with spruce branches for the winter; in especially severe frosts, the tips of the branches may freeze slightly, and some leaves may turn brown.

On hot days, additional watering and sprinkling is required. A dense, beautiful crown forms on well-heated, wind-protected areas. Laurel cherry lends itself well to cutting and keeps its shape for a long time. But the cooler the region in which the cherry laurel lives, the less energy it has for too rapid growth and flowering, in these cases it only makes sense to form a crown, occasionally shortening individual shoots. The distance between young plants is from 30 to 50 cm.

See the next page for the best plants for creating a mid-tier noise-blocking multi-row hedge

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