Evergreen hedge; Composed of evergreen shrubs or small trees, they are usually trimmed into regular patterns. Commonly used are coral, Euonymus japonicus, Ilex japonicus, Ligustrum lucidum, Pittosporum, mosquito moth, cypress, heather and so on.
Hedgerow: Generally, branches or leaves have barbs or thorns, such as Fructus Aurantii, Ziziphi Spinosae, Acacia, Ilex cornuta, Pyracantha, Berberis, Zanthoxylum bungeanum, Oak, Rosa davurica, Pericarpium Citri Tangerinae, Elaeagnus Elaeagnus and so on.
Hedgehog: Commonly used colorful or gorgeous species, such as hibiscus, bougainvillea, hibiscus, Tang Di, five-color plum, ribbon flower, gardenia, winter jasmine, Spiraea, Hypericum, rose, rhododendron, cigar flower, dragon boat flower, osmanthus, jasmine in snow, yellow heart, etc., among which evergreen fragrant flowers and trees are used as hedges in fragrant gardens, especially.
Fruit hedge: generally choose varieties with bright fruit colors, which bear fruit in autumn. Generally, it is not pruned, such as Phyllostachys australis, Pyracantha fortunei, Broussonetia papyrifera, Elaeagnus Elaeagnus, Berberis, Callicarpa formosana, Holly, Rhododendron, cigar, Dragon Boat Flower, Osmanthus fragrans, Gardenia, Jasmine, Hypericum japonicum in the snow, Yingchun, Huangxin and Hibiscus.
Hedgerow: It is composed of flowering shrubs, which are generally allowed to grow without pruning. Common tree species; Hypericum, Gardenia, Yingchun, Huangxin, Willow in Snow, Rhododendron, Pentaphyllum, etc.
Color hedge: Generally, tree species with colored leaves or purplish red leaves all year round are selected, such as Japanese coral sprinkled with gold, Phnom Penh mulberry, Ficus, Cinnamomum cassia, purple-leaf Berberis, dwarf Berberis, Euonymus japonicus, Phnom Penh Ligustrum lucidum, Ficus, Amaranthus rubra, Ficus alternifolia and Forsythia. In addition, plants with red stems, such as red rosewood, can also be used to make red stems and white snow in winter, which set each other off.
Deciduous hedge: It is composed of deciduous trees. Commonly used in the north, such as elm, silk floss, Amorpha fruticosa, tamarisk, snow willow and so on.
Fence: It is composed of climbing plants. Where there are bamboo fences, wooden fences or lead wire fences, vines can be planted at the same time and climbed on the fences, which has other characteristics. Plants include bougainvillea, lingxiao, ivy, dill and morning glory.
Hedgehog net: A net or lattice form in which plants are woven together. So as to increase the protective effect of the hedge. Commonly used plants are hibiscus, willow, Amorpha fruticosa and so on. Generally, evergreen, short and shallow-rooted flowering shrubs and bamboos are selected.
Euonymus fortunei, ivy, dwarf bamboo, etc. High fence or green wall: it is often used to separate spaces, cut off gables, toilets and other places that should not be exposed. Mainly used for noise prevention, dust prevention and space separation, most of them are shrubs or semi-trees planted at equal intervals, which can be planted in single row or double row. It is characterized by high plants, compact group structure and strong texture, and has the functions of shaping the terrain, setting off the scenery and blocking the line of sight.
The high fence forms a closed perspective line, which is far more vivid than using a wall. As the background of statues, fountains and art facilities, it can create a beautiful atmosphere. The height is generally above 1.5 meters, and various doorways and landscape windows can be opened on it to decorate the landscape.
Hedge materials can be selected from Broussonetia papyrifera, Oak, france holly, Ligustrum lucidum, Sabina vulgaris, Elm, Caragana, Amorpha fruticosa, etc.
Middle hedge: Middle hedge is the most widely used and planted in garden construction. Its height shall not exceed 1.3m and its width shall not exceed1m.. Most of them are double-line geometric curves. The middle hedge can separate large scenic spots, so as to organize tourists' activities, increase the green texture and beautify the landscape. It is often used in street green belts, road intersections, or planted in parks, boulevards, car barriers, streets and buildings; Many camps were built into flower hedges, fruit hedges and leaf hedges.
Hedge materials can be planted with gardenia, Michelia, hibiscus, red mulberry, bell flower, variable leaf wood, Ligustrum lucidum, Phnom Penh coral, Ligustrum lucidum, Qilixiang, Pyracantha fortunei, tea tree and so on.
Dwarf hedge: Dwarf hedge is mainly used to surround the garden as a decoration for lawns and flower beds. It is mostly used in small courtyards, and can also be used for composing characters or patterns in large courtyards. They are usually less than 0.4 meters in height and consist of short plant belts. Visitors can overlook the flowers and plants in the garden through the hedge. Dwarf hedges have two different settings: permanent and temporary, and the plant materials are woody and herbaceous.
Commonly used plants are rose, boxwood, snow, cypress, evergreen, colorful grass, red Berberis, jasmine, rhododendron and so on. Hedges are all trimmed manually to meet the design requirements. After planting, fully irrigate and trim in time. The function of pruning: first, it inhibits the growth advantage of the top of the plant and promotes axillary bud germination, then the branches grow and the walls are full, which is beneficial to pruning and shaping. The second is to speed up the molding and meet the design appreciation effect.
The principle of pruning:
For the overall form of hedge, the lower branches and leaves should be exposed to sunlight as much as possible to avoid withering due to excessive shading. Therefore, it is best to make the lower part of the crown wider and narrower, and go to the top, usually in the shape of a regular trapezoid or steamed bread. From small to large, trim many times, smooth lines, and shape as needed. Generally, the design height of hedges is 60- 150 cm, and those exceeding 150 cm are tall hedges (also called green walls) to isolate the line of sight.
The technical requirements for initial cutting and pruning are:
Trim the hedge when it is 30 cm high. Trim it into prototype 3-5 times according to the design type.
Dressing time:
After the first pruning, remove the cut branches and leaves, strengthen the management of fertilizer and water, and carry out the next pruning when the new branches and leaves grow to 4-6 cm. If the interval between the first pruning and the second pruning is too long, the hedge will be deformed and must be trimmed. Noon, rainy days, strong winds and foggy days are not suitable for pruning.
Pruning operation:
Large hedge shears are mostly operated by hand, requiring sharp edges to be close to the hedge surface, no leakage and no heavy cutting, more cutting for the prosperous protruding parts, less cutting for the weak long concave parts, and cable trimming on a straight plane. Hedges of different shapes (round, grinding, fan, Great Wall, etc.). ) is trimmed according to the type, with more cutting at the top and less cutting around.
Prototype pruning:
When the hedge grows to meet the design requirements, all new branches and leaves will be cut off at one time to maintain the design specifications.
Most hedges are trimmed according to a certain shape, but for slow-growing tree species, tall bamboo hedges and ornamental flower hedges, most of them are not trimmed, or only the branches on them are adjusted. For hedges that need pruning, the following forms can be constructed: first, single-layer hedges with the same height can be pruned; The second is a two-layer hedge composed of two layers with different heights; The third is multi-layer hedging with more than two layers. From the perspective of shielding effect, two-layer and multi-layer are better, and multi-layer has more changes in spatial effect. Through deliberate pruning, the beauty of hedges can be combined with the beauty of lines, and hedges can be constantly updated to maintain vitality and ornamental value for a long time.
Hedge pruning cycle and times:
Hedge pruning period should be flexibly mastered according to different tree species. For the hedge of evergreen coniferous trees, because the new shoots germinate earlier every year, the first pruning should be completed in late spring and early summer, and cutting materials can be obtained. After beginning of autumn, autumn buds began to grow vigorously again. At this time, it is necessary to carry out a second comprehensive pruning to keep the plants neat and consistent in autumn and winter, and the wounds should be healed before the arrival of severe winter.
For most broad-leaved hedges, they can be pruned at any time as needed in spring, summer and autumn. In order to obtain enough cutting materials, it is usually carried out in late spring and early or late growing season. Hedges planted with flowering shrubs are unlikely to be pruned regularly, so it is better to prune them after the flowers wither, so as to avoid a large number of robust new buds consuming nutrients and promoting the differentiation of new flower buds, so as to prepare for next year or later.