Plant configuration of roof garden?

What is the specific content of plant arrangement in the roof garden? Here, Zhong Da Consulting will answer your questions.

Roof garden can be broadly understood as a general term for gardening and planting flowers and trees on the roofs, terraces, roofs and balconies of ancient and modern buildings, structures, city walls, bridges (overpasses) or artificial mountains. The biggest difference between it and open gardening and plant planting is that the roof garden has moved open gardening and plant planting to buildings. Its planting soil is artificial synthetic soil, which is not connected with natural soil. The protagonist of the roof garden is greening plants, which can produce oxygen, purify the air and adjust the temperature and humidity of the air, thus creating a good ecological environment; The gas it emits has bactericidal effect and is very beneficial to people's physical and mental health; At the same time, it has many functions such as thermal insulation, sound insulation and noise reduction, waterproof layer protection and covering structure, and is known as "living building materials". Flowers and shrubs are the main part of the roof garden, and the collocation of flowers in four seasons should be realized as much as possible. Such as: elm leaf plum, spring rhododendron, winter jasmine, gardenia, peach blossom, cherry blossom, begonia; Lagerstroemia indica, Xia Juan, Eupatorium adenophorum, Michelia and Pomegranate in summer; Haitang, chrysanthemum and osmanthus in autumn; Winter wintersweet, camellia, camellia. Herbaceous flowers can be matched with chrysanthemum morifolium, primrose, rose, rose, marigold, string red, poinsettia and so on. Aquatic plants include calla lily, bamboo, lotus, water lily, water chestnut and water hyacinth. In addition to considering the four seasons of flowers, we should also pay attention to choosing trees according to the changes of seasons. According to the growth conditions, evergreen plants such as magnolia grandiflora, gardenia, cypress, boxwood ball, purple leaf plum, Sophora japonica, loquat, osmanthus fragrans and bamboo can be selected. Use more tree species with high ornamental value, such as Acer negundo, Acer negundo, Photinia rubra, etc., with beautiful branches and leaves and red leaves; Elegant and elegant cycads; Shrub with swaying branches and leaves; It refers to plum, orchid, bamboo, chrysanthemum, pine and so on. Edge plants are widely used in roof gardens. It is attractive to plant some marginal plants around the flower bed or under trees and shrubs, and at the same time, it makes full use of the corner of the altar. The marginal plants can be Ophiopogon japonicus, Bambusa bambusa, Ligustrum lucidum, Lonicera japonica Thunb, etc. , in order to avoid the bottom corner effect, leaving less bare soil and blank. The wall greening of roof garden usually uses tendrils and barbs of plants to adsorb, entangle and climb, so that they can grow rapidly on various vertical walls. Parthenocissus tricuspidata, wisteria, ivy, fireworks, Lingxiao, Euonymus creeping and other plants are cheap and good, which have certain ornamental value and can be used as the first choice. You can also choose other flowers hanging on the wall. Such as wisteria, grapes, sherry, Parthenocissus tricuspidata, radix aucklandiae, honeysuckle, fireworks, Xifu begonia, Akebia Akebia, morning glory, kites, etc. Or fruits and vegetables such as grapes, vegetables, pumpkins, loofah, bergamot, etc. Lawn and ferns are the most widely used ground cover plants in roof gardens. Such as dwarf cypress and cactus, all kinds of turf, such as tall fescue, velvet grass, recurrent grass, Ophiopogon japonicus, onion, horseshoe tendon, new tassel, sunflower, peanut, wedelia, lantana, red and green grass, tall fescue, anchovies and so on. In addition, many perennial plants are good varieties of ground cover plants, such as Tangtian Honghua, Sanguisorba officinalis, Fuguicao and Dianthus chinensis. If skillfully matched and reasonably organized, it can create a bright and lively bottom space. Hedgerow plants are often planted at the edge of planting area, the background of sculpture fountain or the boundary of scenic spots. Its existence makes the planting area in an organized and safe environment, and can also be used as a foil for independent scenic spots. However, hedge plants should not be allowed to usurp the role of master in gardening or management. Common hedge plants include Ligustrum lucidum, Schizophyllum, Mume, juniper, Pearl Plum, Buxus buxus, Buxus buxus, Hibiscus, Ilex, etc. In roof greening design, priority should be given to mulberry, acacia, magnolia grandiflora, fig, palm, Euonymus japonicus, oleander, hibiscus, jasmine, rose, guava, pittosporum, osmanthus and other varieties with strong anti-pollution ability. The thickness of the planting layer in the roof garden generally depends on the plant species. Herbs 15 ~ 30cm, flowering shrubs 30 ~ 45cm, big shrubs 45 ~ 60cm, shallow-rooted trees 60 ~ 90cm and deep-rooted trees 90 ~ 150cm. The above thickness can only meet the minimum soil conditions required for its survival and breeding period, so the planting layer thickness should be greater than this minimum value.

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