Shrubs are usually described as plants with many stems that do not generally grow above fifteen feet; some shrubs can grow to larger sizes, such as the forsythia that can rarely reach 18 to 20 feet. A shrub differs from trees in most trees grow from a single thick trunk and have an extensive root system of up to three times their large canopy. The deep, woody roots of the shrub can have an advantage over other types of plants in the long term as they compact soil and increase the amount of nutrients within soil.
When plated on a slope a shrub, such as the burning bush can have a positive effect on the soil by compacting it and helping stabilize the soil and stop it sliding off the surface and down the slope. The burning bush is a native of the US and Canada and provides interest in a yard because of the purplish brown twigs and stems.
Larger shrubs are also used to screen and hide areas of unfinished or unattractive areas of a yard or recreation area from view. Many of the worlds population of shrub are deciduous, meaning they protect areas of a home or building from the Sun in the Summer months and allow sunlight through to heat areas when the Winter arrives and the leaves have been shed.
When an area of ground or Plant Nursery has been damaged or its nutrients have been used up and it is a difficult growing area the plating of a shrub can help bring the area back to life as a growing region of a yard. Not only can a shrub increase the nutrients in the soil, it can also reduce the amount of chemicals harmful to other pants. In parts of British Columbia a native shrub can draw nitrogen into it and reduce the amount found in the environment.
One of the major reasons for planting plants of any variety in a bare area of yard is that soil not used for plants, grasses or trees can become compacted and lose its fertile nature; a shrub, like blue hydrangeas planted in a yard can fill a barren area quickly with large blue flowers known in some areas as mopheads. Blue hydrangeas can grow to large sizes and cover the ground of an area of land in Garden Center with the most attractive flowers that have made the shrub one of the most popular plants in the world.
Many people plant a tree or shrub in their yard in order to encourage wildlife to visit, feed and breed in their gardens. Planting a forsythia, which generally grows to around nine feet and is a member of the olive family can provide food and a place to shelter for wildlife including squirrels and birds who visit most yards.
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