5 best plants for creating hedges that protect against dust
A hedge is not only one of the most important elements of landscape design, it also performs various protective functions. If, for example, the garden is bordered by a road or a highway passes nearby, then a hedge is a must. "Green walls" formed from correctly selected plant species will protect the garden from dust, noise, wind and create a special cosiness and microclimate. In this article, we will consider the optimal plants for creating hedges, which can reliably protect the site, primarily from dust. And also talk about the basic principles of creating such "living barriers".
General principles for selecting plants for hedges that protect against dust
Scientists have found that deciduous trees and shrubs in the summer are able to "collect" up to 87% of dust, and after deciduous - up to 60%. Coniferous plants protect the garden from dust more reliably and year-round. It is established that per unit weight of the needles dust settles one and a half times more than per unit weight of the leaves.
When the main task is protection against dust, the possibilities for choosing plants are narrowed. We need filter plants that can trap the dust in the air. In addition, in order to minimize harm to both the garden and its inhabitants from the rising clubs of road dust, there is a need to have a high and dense hedge. In this situation, lush, beautifully blooming spireas, roses, rose hips or fruit trees, as well as stunted conifers, will not work.
In addition, fairly hardy trees and shrubs are selected for this purpose, since the dust deposited on the leaves, branches and trunks, strongly affects such vital processes as photosynthesis, water regime of plants, synthesis of chlorophyll and protein, and respiration of plants. Under dusty conditions, the growth rate decreases, and the life span of plants decreases, they age 7–8 times faster. Therefore, choosing plants for hedges by the road, preference is given to long-lived plants.
To improve the condition of hedges in dusty areas, it is recommended to wash off the dust from plants by watering their crowns from a hose and sprinkling. Doing it is better in the morning.
Landscaping experts found that of conifers for green hedges that protect against dust, the most suitable are mountain pine, black pine, western thuja, Serbian spruce, prickly spruce. Other conifers tolerate the dustiness of the air worse, they become less resilient, their needles grow dull, acquire grayish or brown shades, and they practically stop growing.
Champions in dust collection among deciduous plants are elms, lindens and lilacs.
In order to get a fence 2-3 meters high in a fairly short time, you must follow the rules of planting and take into account the characteristics of each type of plant.
Since the plants in the hedge are quite densely located, they need careful and timely care. This is regular watering, mulching the soil, top dressing, weeding, sanitary pruning, haircuts, as well as preventive treatment against diseases and pests.
The hedges are most effectively "collected" by hedges from densely planted plants in two rows or arranged in tiers (higher trees and the lower row of shrubs, such as barberries). Combined pine hedges from different types of pines look beautiful.
A beautiful dense hedge is formed over several years.
For a list of the best plants for creating hedges that protect against dust, see the next page.