How to use garden plants to make it cool in summer and warm in winter?

Courtyard plants play a role in cooling in summer and warm in winter, one is because the trees absorb solar radiation heat, through photosynthesis, the carbon dioxide and water in the air into organic matter, and absorb water from the roots, through the evaporation of the leaves, reduce the air temperature. Second, the lush trees have good shading in the summer, and the fallen leaves of the trees can still pass through the sunlight in the winter. Due to the large inclination angle of sunlight, it penetrates deep into the room, and the indoor solar radiation heat is more.

Third, trees have the function of guiding the wind direction and blocking the wind. Trees planted in rows can channel cool summer breezes into buildings according to the prevailing wind direction in different seasons, while trees planted on the north and northwest sides can reduce wind speed and act as a wind block.

It is advisable to choose trees that grow taller, have wider branches and leaves, are lush in summer, and have fallen leaves in winter.

Depending on the orientation and the different areas suitable for the forest, the types of trees suitable for selection are not the same, and their arrangement is also different.

The problems to be paid attention to when planting trees in the courtyard are: first, do not plant trees too close, so as not to damage the foundation of the house; Second, it is not advisable to plant large trees and shrubs in the window, so as not to affect the line of sight, lighting and ventilation.

Shanghai Branch of China Academy of Building Research.

Plant some deciduous trees on the south side, the one with a large crown and thick shade, and some evergreen ones on the back to block the wind in winter.

At the end of autumn, when the weather becomes cooler and flowers enter the late stage of growth, nitrogen fertilizer application should be controlled, and more phosphorus and potassium fertilizers, magnesium, boron, zinc, iron micro-fertilizers, root promoters, etc. should be applied. At the same time, the amount of watering is controlled to promote the growth and enrichment of the plant and enhance its cold resistance. After entering the dormant period in winter, fertilization was applied once, mainly with manure, manure, cake fertilizer, etc., to increase the concentration of soil solution and further enhance the cold resistance of flowers in the open field.

Some root-based flowers and grass flowers that grow in the open field of the courtyard, such as peony, canna, dahlias, tulips, etc., are prone to frost damage or cold damage in the area north of the Huai River.

Generally, before the cold snap, the ground around the rhizosphere of flowers is covered with leaves, wheat straw, straw or plastic film and other materials to keep warm, heat and freeze. These mulches are removed at the end of April of the following year after the late frost.

When winter comes, all the aboveground parts are dormant, but the roots are still growing slowly, such as peonies, hydrangeas, wood hibiscus, osmanthus, yueji, etc. Soil should be planted around the roots of these flowers, and when the plants begin to germinate in the spring, the soil should be peeled off and watered and fertilized.

For some large ornamental flowers, because the tree body is large, it cannot be buried or covered, and it can be protected by wrapping fine straw rope, wrapping grass, wrapping paper and covering plastic film; For some flowers and trees with strong cold resistance and afraid of cold wind or just planted, the method of setting up wind barriers can be adopted, that is, on the west and north sides of the flowers and trees, reed mats, tree sticks, corn straw and other materials are used to set up wind barriers, such as cedar and dragon cypress planted and bred in the north of the Huaihe River.

Common cold-tolerant flowering plants include February orchid, hosta, daylily, hollyhock, rose, peach, lily, hibiscus, lilac, begonia, wisteria, honeysuckle, dragon cypress, etc. Most biennial plants are hardy, such as violets, calendulas, medallion chrysanthemums, kale, etc., and these plants will maintain their tenacious vitality even if they grow slowly in winter.

After the beginning of spring, it will continue to grow and bloom.

1. Bulbous plants: such as vermilion, hyacinth, narcissus, tulip, etc.

2. Evergreen woody plants also have strong cold resistance, such as ligustrum, purple-leaved tiller, holly, small-leaved boxwood, gold-leaf privet, such common woody greening plants will not lose a large number of leaves even in winter, but the flowering is much worse.

3. The woody hibiscus, pomegranate, vitex and so on are all deciduous woody, which are also relatively cold-tolerant and easy to serve. But in winter, the leaves are dormant, and when spring comes, the weather warms up and sprouts again.

4. Root plants: such as chrysanthemums, which overwinter with root seedlings at the end of the flowering period.

5. Perennial herbs, such as suitable temperature, grow all year round, the most typical such as petunias.

The selection of garden plants also needs to be considered from the following aspects:

1.Pay attention to the visual effect of garden plants in different seasons. If the northern winter is more monotonous, you can choose plants with beautiful branches.

2.In order to meet the requirements of courtyard functions, such as separating different functional spaces, it is necessary to choose hedge plants such as boxwood and vines.

3.Choose plants that are resistant to cold and drought, resistant to diseases and pests, and can be extensively managed, such as golden doll, lewdness, honeysuckle tartare, etc.

4.Considering the composition of family members, if there are children at home, try not to choose thorny plants such as begonias and purple-leaved barberry, so as not to stab the children.

Plum blossoms, which are very hardy, do not need to be kept warm. Clematis also has a good ability to withstand cold. Kale is also very hardy. None of these plants require special warmth measures.

Magnolia, Yueji, Magnolia, Wisteria, Hibiscus, Ginkgo biloba, these plants can be grown in the northern garden and are not affected by the climate. In winter, you need to take precautions to keep warm.

Evergreen, bluegrass, small pines and cypresses are all good green plants, not only evergreen but also more resistant to cold, and there is no need to do warm measures in winter.

Honeysuckle: It has high cold, moisture and drought tolerance. Camellia:

It is highly adaptable to the environment and has high ornamental value. Clematis: can grow normally in an environment of minus 20 degrees Celsius.

Yushu: Prefers sunny, dry, warm environments. Golden Branches and Jade Leaves:

It is a perennial succulent evergreen shrub of the purslane family.

1. Honeysuckle

Cold-tolerant and drought-tolerant garden evergreen plants include honeysuckle, which is a perennial semi-evergreen shrub with stolons, which has strong adaptability to the environment, prefers a sunny environment, and has high cold-tolerance, moisture-tolerant and drought-tolerant.

2. Camellia

Camellia has a beautiful plant shape, the leaves are dark green and shiny, the flower type is huge and the flower color is colorful, and the plant has strong adaptability to the environment, and most varieties can safely overwinter in the low temperature environment of minus seven degrees.

3. Clematis

Clematis is often planted in the courtyard for ornamental use, has high cold resistance, can grow normally in the environment of minus 20 degrees, and the plant does not have high requirements for water, and can wait for the soil to dry and then water permeable again.

4. Yushu

The jade tree is a pulpy succulent evergreen shrub, which is suitable for growing in a sunny and dry environment, with fertile and soft soil.

5. Golden branches and jade leaves

It is a perennial succulent evergreen shrub of the purslane family, which prefers a warm, dry, sunny environment, has a certain cold tolerance, is suitable for growing in soft and fertile soil, and is a common garden plant.

Wrap the straw dry, wrap it with film, wrap the outer layer with a straw rope densely wrapped, especially the base of the dry should be wrapped, and let the straw cover the soil, and some places can build a wind barrier to avoid the direct blowing of cold wind. Carry out winter irrigation, soil cultivation and watering back to the green ruler in a timely manner, and water permeable water and then cover the soil before the soil freezes, so as to prevent low-temperature frostbite and reduce water volatilization. Prune excess leaves and branches to reduce water evaporation.

During or after heavy snowfall, the snow on the branches and the socks should be removed, so as not to be overweighed by the snow, making the branches bent and difficult to restore to their original shape, or even breaking. If there are trees, whitening the trunk with lime and sulfur mixture can reduce the injury of the sunny skin due to the excessive temperature difference between day and night. Finally, the pre-preventive measures should be sufficient to enhance the cold resistance of plants.

In spring and summer, carry out 2-3 times of ploughing and loosening soil work for overwintering plants at the critical point to ensure the expansion of the root system, apply a light fertilizer around mid-May, and apply N-P-K compound fertilizer once in September, remember not to use N fertilizer to avoid excessive autumn hair. <>

Pour frozen water. This generally refers to plants that grow outdoors in the open air in the north. Apply basal fertilizer once in autumn, and then water carefully before freezing.

Winter irrigation can accumulate more heat in the soil, reduce the change range of ground temperature, and reduce the frost damage of plants over winter. The exact amount of irrigation varies depending on the tree; Cover the straw curtain, cover the mulch, cover the geotextile. This is for northern outdoor shrubs or ground covers.

If it doesn't snow in the south, you don't need to; The trunk of the tree is tied with a straw rope. It applies to both the South and the North. Mainly to keep Tomohiro warm; Pruning and thinning leaves.

Before winter, prune off the excess leaves on the plant, leaving only a small part, the main purpose is to let the plant's nutrients reach the roots, not let the leaves occupy a large amount of nutrients, and ensure the survival rate of winter; Apply fertilizer before winter. <>

Closed balcony plants to protect against the cold: In the city, most enthusiasts basically raise flowers and plants on the balcony and enclose the balcony. Then install a guardrail and bracket on the outside of the balcony, so that you can raise flowers in spring, summer, autumn and winter.

In winter, the enclosed balcony can play the role of a greenhouse, and has a certain thermal insulation and warming effect. Some temperature-loving, medium-temperature flowers do not safely overwinter outdoors, and tombs on enclosed balconies are protected from frost. Therefore, such as bamboo, begonia, begonia, junzi orchid, crab claw orchid, epiphyllum, rhododendron, cyclamen, spider plant, smiling, cycad and some foliage plants, etc., can safely overwinter on the enclosed balcony; Open pants liter balcony plants for cold protection:

The open balcony has fast air circulation, high evaporation, and low relative humidity of the air. In winter, because it is mostly northerly wind, and the wind is also larger, whether it is the north balcony or the south balcony, even if the local flower varieties that can usually overwinter in the open field, the open Husan balcony still needs to be properly cold-proofed, and the south balcony of the multi-storey building is mostly open, because of its leeward to the sun, the frost damage or cold damage of flowers is far less prominent and serious than the north balcony, so the flowers are generally placed on the south balcony for wintering in winter. Winter is very cold, especially in the winter of the north, you should pay attention to the flowers on your balcony to keep warm, cold, if the maintenance is not done properly, it is easy to frostbite, and even death, so you should be extra careful when maintaining.

Located in the southernmost part of Chinese mainland, winter is the happiest season, and the lowest temperature of the year is generally only 5 degrees Celsius. It's simply the optimal temperature for succulents. Just put the watering time around 9 a.m. and around 3 p.m.

I also stayed in Shandong for a period of time, and the gardener's brother's practice was to use three wooden strips to support the saplings, and surround them with several layers of black shade cloth. <>

Not all plants in the world are afraid of cold, there are many that can spend the winter in the garden, such as tulips, moonflowers, clematis, spring flowers, irises, hosta flowers, hydrangeas, daylilies, plum blossoms, saffron, hyacinths, peony flowers, woody flowers, etc., the cold tolerance of these plants is good, even if they are not moved to indoor maintenance in winter, they will not be frozen to death.

Among the many flowers, not all of them are afraid of the cold. There are common garden flowers that can survive the winterPlum blossoms, moon flowers, spring flowers, clematis, hydrangeas, hollyhocks, alum roots, lupinflowers, plums, woody flowersWait.

These flowers and plants generally do not freeze to death at about minus 10 degrees Celsius, and they can safely overwinter in the open air in winter as long as the local minimum temperature is not lower than 10 years old.

MayFlowers

Plum blossoms are very hardy woody flowersGenerally able to withstand low temperature environments of -10 -15。Plum blossoms planted in the yard can safely survive the winter as long as they are not exposed to long-term extreme cold weather.

Seasonal flowers

Yueji has a strong ability to adapt to the environment, and can be planted in the open air in the yard in both the north and the south. After winter, give the plant a large pruning of its messy branches. Only the main thick old branches are kept, and more new shoots can sprout in the coming year.

Spring flowers

The spring flowers are very cold-tolerant, and the spring flowers planted in the yardIt can also overwinter normally in an environment of more than 10 degrees below zeroand bloom early in the following spring.

Kale

KaleIt can withstand low temperatures above minus 15 degrees Celsius, not afraid of snowy days. Plant a few trees in the yard, basically don't care, just quietly admire. Plant a few more trees in the yard, and the ornamental value will be higher.

Alum root

Alum root is known as the garden palette, and among foliage plants, it is relatively hardy. It is no problem for ground-planted seedlings to survive the winter at a low temperature of more than minus 15 degrees。Even if the temperature is too low and the ground is partially dry, as long as the root system is fine, it will sprout and grow again next spring.

Iron chopsticks

The leaves of iron chopsticks are very thick and hard, and they are extremely hardyGround planting can tolerate low temperatures of minus twenty or thirty degrees。Even if it is a potted plant, it can withstand low temperatures above -15 degrees Celsius, and it is very popular with flower lovers.

Clematis

Clematis is particularly cold-tolerant, because its branches have no water, just like iron wire, so that it is frost-resistant in winter, so it is called clematis. It is strong by natureThe cold tolerance reaches minus 20 degrees, and the frozen beam will not dieIn winter, spend the winter outdoors in the open field, no problem at all.

Daffodils

Daffodils are particularly hardy bulbs, itIt can withstand low temperatures of minus ten degrees。It can still bloom in the ice and snow. In the past, it was cold at home in winter, and it was also cold in places where there was no heatingOne of the only plants that can grow and bloom in the northern winter