Shrubs may be divided according to their height into the following groups: a) tall shrubs (3-8 in high) such as hawthorn, sea buckthorn, b) medium-size shrubs (1-3 m high), this being the largest group of low shrubs (up to 1 m high) such as mezereon. Of importance from the gardening standpoint is the division of shrubs into evergreen species (English holly, mahonia, box, etc.) and deciduous species (most central European shrubs).
One example is the high mountain shrub community above the tree line consisting of dwarf pine, European green alder, dwarf willows, rhododendrons and other shrubs whose limited height coupled with a protective blanket of snow permits them to survive the icy winds and sub-zero temperatures of the winter months.
Some deciduous shrubs are often used to form hedges of varying height and thickness because they stand up well to pruning. These include also certain thorny species that form practically impenetrable hedges. For this purpose, shrubs may be divided into two groups: those that form hedges more than 2 al high and those that grow to a height of 1-1.5 m.
The first group includes Caragana arborescens, Chaenomeles lagenaria, Crataeous laevigata (oxyacantha), Ligustrum vulgare, Lonicera tatarica, physecarpus opulifolius and Syringa vulgaris ; the second Berberis thunbergtz, Buxus sempervirens, Mahonia aquifolium, Prunus spinosa, Ribes alpinum, Rosa rugosa and Spiraea x vanhouttei.
The main characteristics that differentiate the shrub from the tree are the structure of the trunk and the height it attains. Unlike trees, shrubs generally have more than a single stem, branching close to the ground to form several thinner stems that grow to a maximum of 5-8 m in height.
Many shrubs have healing properties and their flowers, fruits, leaves or bark are collected for pharmaceutical purposes (hawthorn, elder, alder buckthorn, common buckthorn, etc.). Quite a few bear fruits rich in vitamins or of great nutrient value and these are processed by the food industry (hazel, blackthorn, quince, raspberry, dog rose, cornelian cherry, etc.). In many regions certain shrubs and their parts are used for other purposes and in the making of a great variety of products. - 15266
One example is the high mountain shrub community above the tree line consisting of dwarf pine, European green alder, dwarf willows, rhododendrons and other shrubs whose limited height coupled with a protective blanket of snow permits them to survive the icy winds and sub-zero temperatures of the winter months.
Some deciduous shrubs are often used to form hedges of varying height and thickness because they stand up well to pruning. These include also certain thorny species that form practically impenetrable hedges. For this purpose, shrubs may be divided into two groups: those that form hedges more than 2 al high and those that grow to a height of 1-1.5 m.
The first group includes Caragana arborescens, Chaenomeles lagenaria, Crataeous laevigata (oxyacantha), Ligustrum vulgare, Lonicera tatarica, physecarpus opulifolius and Syringa vulgaris ; the second Berberis thunbergtz, Buxus sempervirens, Mahonia aquifolium, Prunus spinosa, Ribes alpinum, Rosa rugosa and Spiraea x vanhouttei.
The main characteristics that differentiate the shrub from the tree are the structure of the trunk and the height it attains. Unlike trees, shrubs generally have more than a single stem, branching close to the ground to form several thinner stems that grow to a maximum of 5-8 m in height.
Many shrubs have healing properties and their flowers, fruits, leaves or bark are collected for pharmaceutical purposes (hawthorn, elder, alder buckthorn, common buckthorn, etc.). Quite a few bear fruits rich in vitamins or of great nutrient value and these are processed by the food industry (hazel, blackthorn, quince, raspberry, dog rose, cornelian cherry, etc.). In many regions certain shrubs and their parts are used for other purposes and in the making of a great variety of products. - 15266
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When the contours and layout of the garden have been plotted on a flat garden plan, you can begin to translate the shapes into walls, steps and paves areas which will form the basic skeleton of the garden.
