Maintenance and management of small crown flower

Corolla is a perennial herb with strong adaptability, strong growth and less diseases and insect pests. Corolla has been used for more than 20 years in China, but it has been used for many years in the United States. So how can we raise the small crown flower well?

Small crown flower

The small crown flower likes the warm and humid climate, but because its root tillering bud is lurking at about 20 cm below the surface, it has strong cold resistance and overwintering ability. the green grass period is about 220 days in Xi'an and more than 300 days in Wuhan and Qianjiang.

The grass needs more water for its growth, but because of its well-developed roots, it can reach 1.4 meters in one year and 4.8 meters in two years at the foot of Shaanxi highway. There are more than 100 lateral roots per square meter, and they are more drought-resistant. Generally, they can grow normally without irrigation in a place with an annual precipitation of 400 meters and 450 millimeters. Unable to tolerate waterlogging, the root will rot and the whole plant will die after flooding for a few days.

The small crown flower grows slowly at the seedling stage, if the slope scouring problem is not considered for the time being, and the management and protection is strengthened, the coverage rate can reach more than 80% within six months. In order to prevent soil erosion as soon as possible, according to different construction time and site conditions, mixed sowing of Gramineae grass can cover more than 80% of the surface in 40 days, and it will take about two years to "eat" all the associated grass species to cover the surface. Once the small crown covers the surface, it will be green and colorful for a long time. Xiao Guanhua has been on the highway in Shaanxi Province for more than ten years, and has been extended to Hunan, Hubei, Henan, Hebei, Shanxi and other places. It has been used on American highways for 60 or 70 years, and it has been well received in all aspects.

Coronilla varia L. Picture of Corolla: how to raise Corolla / how to propagate Corolla Coronilla varia L. Introduction of small crown flower culture methods and matters needing attention small crown flower is a perennial herb leguminous plant with many branches and creeping growth, the stolon is more than 1 meter long and the natural plant cluster is 20-50 cm high. The root system is strong, the lateral root is well developed, and there are adventitious buds and nodules on the root. Leaves are odd-pinnately compound, leaflets alternate, 11-27 long oval or Obovate. Because the inflorescence is like a crown, and the color of the flower is changeable (that is, from pink to purplish red in the later stage), it is nicknamed variegated Corolla. Pods slender as finger-shaped, 3-12 nodes 2-3 cm long, easily broken, each node contains 1 seed; seeds slender, reniform, dark brown. The small crown flower likes light and is not tolerant to shade and has few diseases and insect pests. Strong growth and strong adaptability. Originated in Europe and southwest Asia. It has been used in China for more than 20 years and in the United States for more than 70 years. The morphological characteristics of the small crown flower is perennial herb, the root system is strong and developed, dense root nodule, its root adventitious bud regeneration ability is strong, can make the root system spread to the horizontal direction. The stem is hollow, angled, the texture is soft and creeping upward, the longest is 180cm, and the branching ability is strong; the leaf buds on the nodes are easy to germinate and form many lateral branches. Leaves odd-pinnate, alternate. Umbels axillary, flowers numerous, pink or light red, creeping growth, stolons up to more than 1 meter long, natural clusters 25-50 cm high. There are adventitious buds and nodules on the sturdy lateral roots. Corolla leaves are odd-pinnate compound leaves, leaflets alternate, 11-27 long oval or Obovate pods slender such as finger-shaped, 3-12 nodes 2-3 cm long, easy to break, each node contains 1 seed * seeds slender, reniform, dark brown. The root system is strong and developed, dense root nodule, and its root has a strong ability of adventitious bud regeneration, which can make the root spread to the horizontal direction. The stem is hollow, angled, soft, creeping upward, the longest can reach 180cm, and the branching ability is very strong; the leaf buds on the nodes are easy to germinate and form a lot of lateral branches. Odd-pinnately compound leaves, alternate. Umbels axillary, with numerous flowers, pink or reddish. The root system is well developed, and the depth of the main root is up to 80 cm after one year, and the horizontal spreading ability is strong. The lateral root penetrates more than 1 meter laterally, and adventitious buds grow on the root, which can form new plants and underground stems. From May to July, umbels are axillary, and most of them are crowned by 14 small wreaths arranged at the top of the pedicel, and the flower color changes from pink in the early stage to purplish red in the later stage, hence the name Corolla flower. Fruit maturity from August to September, pods, such as fingers, with obvious pod nodes, 2-3 cm long, a total of 3-12 nodes, easy to break, each node contains 1 seed. Seeds small and strong, slender reniform, reddish brown. The weight of 1000 seeds is 4.1g, about 240000 seeds per kilogram. The ecological habit of the small crown flower likes the warm and humid climate, but because its root tillering bud is lurking at about 20 cm below the surface, it has a strong ability to survive the cold and overwinter. the green grass period is about 220 days in Xi'an and more than 300 days in Wuhan and Qianjiang. The grass needs more water for its growth, but because of its well-developed roots, it can reach 1.4 meters in one year and 4.8 meters in two years at the foot of Shaanxi highway. There are more than 100 lateral roots per square meter, and they are more drought-resistant. Generally, they can grow normally without irrigation in a place with an annual precipitation of 400 meters and 450 millimeters. Unable to tolerate waterlogging, the root will rot and the whole plant will die after flooding for a few days. The small crown flower is not strict to the soil and can grow on the soil of PH5.0--8.2. Strong growth and strong adaptability. Native to Europe and southwestern Asia. It has been used in China for more than 20 years and in the United States for more than 70 years. The root system of Corolla is well developed. it is used for highway slope protection in Northwest China. its growth can reach 1.4 meters in one year and more than 4.8 meters in two years. There are more than 100 lateral roots per square meter with good drought resistance. generally, they can grow normally without irrigation in the area with annual precipitation of 400m / 450mm. Like sufficient light, not very resistant to waterlogging, long-term stagnant water may lead to plant death. The requirement of soil is not strict, and it can grow on pH5.0-8.2soil. Diseases and insect pests are rare. Matters needing attention in the cultivation techniques of the small crown flower grows slowly at the seedling stage. If the slope erosion problem is not considered for the time being and the management and protection is strengthened, the coverage rate can reach more than 80% within six months. In order to prevent soil erosion as soon as possible, according to different construction time and site conditions, mixed sowing of Gramineae grass can cover more than 80% of the surface in 40 days, and it will take about two years to "eat" all the associated grass species to cover the surface. Once the small crown covers the surface, it will be green and colorful for a long time. Xiao Guanhua has been on the highway in Shaanxi Province for more than ten years, and has been extended to Hunan, Hubei, Henan, Hebei, Shanxi and other places. It has been used on American highways for 60 or 70 years, and it has been well received in all aspects. The method of propagation of Corolla is commonly used in seed propagation, such as sowing, strip sowing and hole sowing. The seed consumption per mu is 0.5-1KG, and it can be sown in spring, summer and autumn. Corolla has small seeds and shallow sowing, so the soil should be carefully prepared before sowing. The hard seed rate of the seeds is as high as 70-80%. The seeds must be treated before sowing. A small number of seeds can be soaked in 15% sulfuric acid for 20-30 minutes, or soaked in warm water of 70-80 ℃, cooled naturally, and soaked for about 12-15 hours before sowing. A large number of seeds are generally crushed by a rice grinder before sowing. The germination rate is generally 40-90%, and some hard grains can not sprout until the second year. The growth of weeds is slow at seedling stage, so weeds should be weeded in time. Once established successfully, weeds can be restrained. Disease control of small crown flower, small crown flower likes light and is not tolerant to shade, and few diseases and insect pests occur. The small crown flower has few diseases and insect pests, has no main harm to citrus, peach and other fruit trees, and can provide habitat for natural enemies. The grass likes light and is not tolerant to shade and has few diseases and insect pests. Strong growth, strong adaptability, cold tolerance, drought tolerance, barren soil requirements are not strict, can grow on the soil of PH5.0--8.2. Pay attention to drainage in the rainy season. It is easy to manage and easy to cultivate. The varieties of Corolla are classified into 55 species of Pterygiaceae, which are distributed in the central sea of Europe and West Asia. There are 3 species of Corolla introduced and cultivated in China. Herbs or shrubs; odd-pinnate leaves, leaflets entire; stipules small, membranous, or large and leaflike; flowers pendulous, arranged in a stalked umbel; calyx short campanulate, lobed 5, subequaling; Corolla yellow, rarely purple, petals long stipitate; stamens 10, disomic (9mm 1), anthers homomorphic; ovary sessile, ovules numerous. Pods slender, Terete, quadrangular or slightly flattened, divided into a seed, oblong pod node; seeds transversely oblong. In 1984, the roots and buds of West German Corolla were irradiated by 60CO in Northwest University of Agriculture and Forestry, from which a new variety of Xifu Corolla was selected. The main characteristics of this variety are as follows: (1) exuberant growth, high grass yield, 1593.4 kg fresh grass per mu, 17% higher than the control West German Corolla; (2) developed root system, the thickest diameter up to 2.5cm, horizontal distribution of 3.0m; (3) low toxicity, the content of β-nitropropionic acid in hay at flowering stage is 30.3mg / g and 31.7mg / g, which is 49.5% 51.9% lower than that of the control. (4) the drought resistance and cold resistance are strong, and the growth is still exuberant in Haiyuan County, Ningxia, where the annual rainfall is 300 mm. In Pengyang County, Ningxia, the lowest temperature up to-28 ℃ can survive the winter safely, tolerate barren and saline-alkali soil, but does not adapt to acid soil and has poor moisture resistance. It was examined and approved by the National Herbage Variety approval Committee in November 1991. The market prospect of this variety has been widely popularized in China's Loess Plateau, Northeast, East China, Southwest, South China and other regions. Corolla is native to Europe, southwest Asia, southern Europe and the eastern Mediterranean. It has been used in China for more than 20 years and in the United States for more than 70 years. Corolla has been widely introduced and planted in North China, East China, Central China, Northwest and other places. The small crown flower likes light, and the suitable temperature is 15 ℃ to 30 ℃, but it has strong cold tolerance and can survive the winter safely at the low temperature of minus 34. If covered with snow, it can also survive the winter in Harbin in the northeast. It has low demand for soil, barren resistance and extensive management. it can grow well in P5.0-8.2 soil, among which it grows best in well-drained and neutral fertile soil. Corolla is resistant to drought and waterlogging and grows well in semi-arid areas with annual precipitation of 400-600 mm, but if the water is stagnant for 3-4 days, the roots rot and the plants die. Corolla is a newly introduced ground cover herbage flower with many flowers, beautiful appearance, bright color, long flowering period, dense stems and leaves, large grass coverage and long green period. the green grass period is about 220 days in Xi'an and more than 300 days in Wuhan. Corolla is suitable to be planted in Northwest, North China, Northeast and South China. Has been planted in Beijing, Shaanxi, Shanxi, Nanjing and other places, growing well. Distribution: 55 species in the world and 3 species in China. The small crown flower looks beautiful, especially when it is in bloom, the color of the flower changes from light red to purplish red. Corolla has rapid growth and spread, large coverage, strong stress resistance, long flowering period (5-June in full bloom, sporadic flowering in Qianjiang can be extended to November), and basically evergreen. It is not only grass, but also flowers are basically evergreen, which has high ornamental practical value. Application value Corolla can be used as lawn and soil and water conservation plants, can be used for soil improvement, soil and water conservation, roadsides and some unmowed places as lawns and soil and water conservation plants. Crown plant stem creeping growth, can effectively prevent Rain Water erosion, prevent soil runoff. In foreign countries, Corolla is mainly used for slope protection on both sides of roads and railways, river lifting and bank consolidation, nursing of reservoir dams, water and soil conservation of eroded slopes and so on. Forage utilization because the fresh grass of Corolla is relatively fresh and tender, with high protein content, it is also a good feed for animal husbandry. As a forage grass, Corolla has luxuriant and delicate stems and leaves, high yield and rich nutrient content. Grass and hay are not lower than alfalfa in terms of nutritional value and digestibility to ruminant livestock. Compared with alfalfa, sheep prefer to eat changeable crown flowers. However, because it contains nitropropionic acid, it is toxic to monogastric livestock and is mainly used as forage for ruminants, which is the limitation of its utilization. It can also be used for mowing hay, green feeding and grazing cattle and sheep. When green feeding and grazing cattle and sheep, in the milder climate areas, the grass can be used every year from the beginning of spring, summer and mid-summer to November-December. Note: China began to introduce in the 1970s, in the production practice, Corolla has toxins, can cause monogastric animal poisoning. According to the green manure effect, it is determined that the water content in the fresh grass of small crown flower is 75.8% Magnum N2.58% Magi P2O50.66% K2O 1.22%. In addition to the nitrogen fixation of root nodules, the cutting ability is good, and it can be cut green from May to November every year. 2000~4000kg per 667m2 fresh grass can be cut three times a year. The first green 2000kg in June, the second 1000kg in August, and the third 800~1200kg in November. The cutting time can also be carried out with the needs of orchard production. Community structure: Corolla can form a rich community as long as it is cultivated for one year. The average thickness of the community is 60~80cm, the richness is 6: 13, the branch density is 496-576 / m2, and the dominance is 75%-86.7%. Compared with the areas without crown flowers in the same orchard (control), perennial malignant weeds are significantly reduced and play a good inhibitory effect on weeds in the orchard, especially thatch, Artemisia annua and other malignant weeds. The garden use of the small crown flower is a ground cover plant with strong resistance and soil fixation ability, with fast growth and spread, strong coverage, strong resistance and long flowering period (the flowering period is 5-6 months, and the sporadic flowering in Qianjiang can be extended to November after the full flowering period). Can be planted and sloping land to prevent soil erosion. Corolla can also be planted in the garden, is a better ornamental ground cover plant. The language of the small crown flower: humility. Small crown flower divination: modesty and elegance are your characteristics. You seldom fail, in addition to your own luck, it is mainly because of your temperament. You are modest to people, have objective analysis, will not let unpleasant events occur, coupled with your temperament, has been more than half successful. Small crown maxim: women are far more infatuated with love than men. Management of flowers in July the management methods of flowers in July mainly include the following:

I. Flower culture

1. Sowing seeds

The grass flowers that can be sown in July are: melon leaf chrysanthemum, spring of the four seasons, kale, bluebells and so on. When sowing, we should pay attention to moisturizing, shading and increasing ventilation and light transmission.

In July, mature fruits such as plum, hairy peach, mountain peach and elm leaf plum can be picked, washed and sown, or the washed drupe can be stored in wet sand to the crack before sowing. Wintersweet seeds can be sowed as they are picked, and the seeds removed from the fruit sac can also be dried and stored for sowing in the following spring, which will not affect its germination rate.

two。 Cuttage

The species of grass flowers suitable for cutting culture in July are: Scutellaria barbata, begonia, colourful leaf grass, cold water flower, string red, marigold, peacock grass, thousand-day red, geranium, Dutch chrysanthemum, chrysanthemum, umbrella grass, wall-climbing tiger, coral flower, pepper grass, unicorn leaf, fire charcoal mother, ground root, green pineapple and so on.

The woody flower species suitable for cutting culture in July are: red-backed cinnamon, southern bamboos, poinsettia, tiger prickly plum, hypericum, golden plum, sea immortal, eight immortal flowers, brocade, hemp leaf hydrangea, snow spray, Ruixiang, gardenia, fragrance, Tiannu, triangular plum, Milan, jasmine, pearl orchid, goose palm wood, ten great efforts, pomegranate, crape myrtle, hibiscus, fiery thorn, Zhu banana, Fusang, June snow, smile, coral tree, mulberry. Rubber tree, Qionghua, Tianmu Qionghua, yellow poplar, Yuanhua fruit, purple magnolia, sweet-scented osmanthus, rhododendron, camellia, tea plum, dragon claw willow, golden willow and so on. Guding flower can also be cut with scales.

In addition, some flowers and trees can be raised by water insertion in July. They are: gardenia, oleander, rose, jasmine, pearl orchid, fig, pomegranate, inverted golden bell, crape myrtle, hibiscus and so on. To cultivate flowers and trees by water cutting, one is to have a foam plastic board with a thickness of 1 cm to 2 cm, which is used as a cutting fixing material after perforation; the other is to keep the water quality of the cutting water clean and put a few pieces of charcoal into it for anticorrosion.

3. Grafting

Annual mountain peach and hairy peach seedlings can be used as rootstocks, budding to cultivate green peach, Shouxing peach, red leaf peach, plum blossom, elm leaf plum, red leaf plum, beautiful plum, etc.; cuttings of wild rose, pink rose and "ten sisters" are used as rootstocks, budding cultured varieties rose, cut rose and rose; potted Magnolia and Magnolia seedlings are used as rootstocks, and Magnolia magnolia and Magnolia magnolia seedlings are used as rootstocks The 2-year-old seedlings of Chimonanthus praecox can be used as rootstocks, and the seedlings of 2-year-old Chimonanthus chinensis can also be used as rootstocks. Grafting is carried out at a distance of 3 cm to 4 cm above the ground, and whether it survives or not can be judged after 7 to 10 days. "Purple Butterfly" and "Jade Butterfly" in rhododendron are used as rootstocks to cultivate Belgian rhododendron or rhododendron by split or abdominal grafting. Cherry seedlings were used as rootstocks, excellent varieties of cherry blossoms were cultured by budding, current-year seed seedlings of bauhinia, Hubei begonia or weeping begonia and begonia flowers were used as rootstocks, T-shaped buds were grafted to cultivate excellent varieties of begonia. Acer maple seedlings were used as rootstocks and bagged grafting to cultivate red maple, feather maple and other seedlings.

4. Pressing strip

The species of flowers and trees that can be cultivated by pressing in July are: Milan (high pressure), wax plum, honeysuckle, eight immortals, Lingxiao, Qionghua, oleander, brocade, broom, sweet-scented osmanthus, gardenia, purple magnolia, jasmine, Zhulan, rattan this month rose, welcome spring and so on.

5. Ramet

The ornamental plant species that can be divided into branches in July are: Hosta, purple calyx, calamus, umbrella grass, one-leaf orchid, purple back evergreen, pineapple, twelve volumes, hanging orchid, Ophiopogon, auspicious grass, onion orchid, kidney fern, iris, hanging bamboo plum and so on.

II. Seed harvesting and transplanting

1. Harvest seeds

The seeds of grass flowers that can be harvested in July are: hollyhock, sunflower, morning glory, summer grass, petunia, fluke, Digitalis, snake chrysanthemum, sweet pea, daisy, delphinium, pansy, pine chrysanthemum and so on.

The seeds of flowers and trees that can be harvested in July are: wax plum, plum, hairy peach, mountain peach, elm leaf plum and so on.

two。 Transplanting, planting and potting

July is the main period of time for Chen to put grass flowers on the pot during the National Day, when the grass flowers transplanted into the pot can be sowing seedlings or cutting seedlings. After three months of careful maintenance, they bloom just during the National Day period for holiday decoration. They are mainly: a string of red, early chrysanthemum, thousand-day red, Xiaoli, Guinean impatiens, Longkou flower, marigold, peacock grass, ground skin, chrysanthemum, sulfur chrysanthemum, cockscomb and so on.

Tree transplanting is generally not carried out in July, but in some special cases, it is also feasible to transplant some flowering shrubs with soil balls, such as ten meritorious works, hypericum, golden leaf privet, red leaf Berberis, peach leaf coral, dragon cypress ball and so on. However, it is necessary to prune pertinently, set up a shed for shade in time, and increase the number of water spraying, and then transfer to normal management after its basic survival. We must not be careless.

III. Flower management

1. Watering

The flower species that enter the semi-dormant state at high temperature, such as safflower sorrel, geranium, golden bell, gentleman orchid, calla lily, begonia, sedum, longevity flower, cactus, crystal cactus, big flower rhinoceros, emerald beads, big string moon, Ruixiang, crab claw orchid, purslane tree, aloe, etc., due to high temperature, their growth activities basically stop and their metabolic level is very low. Watering should be reduced to keep the basin soil moist. And pay attention to shading and ventilation to create a relatively cool environment. If too much watering, it is easy to lead to rotten roots, but also seriously affect the recovery of its growth after autumn.

The species of flowers that entered deep sleep at high temperature, such as cyclamen, Lycoris, buttercup, purse peony and so on, showed that the aboveground stems and leaves withered, the underground nutrient fibrous roots withered, and spent the summer dormant in the soil with underground stems or tubers. For deep dormant flowers, stop watering, move to a cool place, and keep the pot soil not too dry.

For exuberant flower species, especially foliage plants, such as cycad, Magnolia, tortoise back bamboo, rubber tree, Magnolia, jasmine, Milan, pearl orchid, southern sequoia, bamboo taro, taro, red (green) gemstone, hulk, green emperor, green queen, pink leaf, Brazilian iron, rich tree, camellia, tea plum, peach leaf coral, torch fruit, daidai, lemon, Luohan pine, pomegranate, bauhinia, wisteria, rose, etc. It is not only necessary to increase the amount of water and times of watering, but also to give foliar spraying water and the combination of spraying and pouring properly. Especially when it comes to continuous cloudy days, due to the high temperature and dry air, it is also necessary to give watering and spraying, and must not be negligent. Once it is found that the basin soil is too dry and the leaves wilt, water should be sprayed on the leaves first, and then the roots should be watered after the leaves are erect again. Do not water the roots violently, otherwise it is very easy to cause the woody flowers to "fall green leaves", or lead to the rot of the vegetative fibrous roots of the plants, or even cause the death of the plants.

For potted plum piles, as the flower bud differentiation period is from July to August, appropriate "buckle water" should be given to promote the normal differentiation of flower buds. The method is to keep the leaves of pot plants curled inward slightly in order to control vegetative growth; if the vegetative growth of branches can not be controlled, only one leaf at the base can be cut off when 2 or 3 leaves are pulled out from the second shoot, and flower buds can still be differentiated in the axils of this leaf.

In July, watering potted flowers should avoid a few hours before and after noon, and it is appropriate to water before 10:00 and after 4 p.m., so as not to affect the growth of potted ornamental plants. If you encounter continuous rain this month, you should check the flowerpot in time after the rain, pour it when you find stagnant water in the flowerpot, and loosen the soil once after the pot soil dries up, so as not to cause rotting roots of potted plants.

two。 Fertilizer application

There are four types of ornamental plants that should be strengthened in July. First, the flowering period is particularly long, from spring and summer to autumn, such as Magnolia, rose, Milan, jasmine, etc.; second, the species of autumn flowers, such as chrysanthemum, sweet-scented osmanthus, hibiscus, etc.; third, the species of viewing flowers and fruits in winter, such as hawkdai, bamboo, wax plum, rhododendron, etc.; fourth, foliage plants, such as brown bamboo, tortoise back bamboo, spring feather, rubber tree, and so on. For the first three types of fertilization, in addition to the necessary nitrogen fertilizer, appropriate amount of phosphorus and potassium fertilizer should be applied to meet the overall needs of plants for nitrogen, phosphorus and potassium, and to provide adequate nutritional guarantee for their budding, flowering and fruit hanging; for foliage plants, it should be based on thin cake fertilizer or urea. In the method of fertilization, it is better to apply thin liquid fertilizer.

The grass flowers that should be fertilized in July are: a bunch of red (white, purple, pink), cockscomb, chrysanthemum, hundred-day red, thousand-day red, chrysanthemum, black chrysanthemum, petunia, golden bracts, shrimp flowers, Jianlan, marigold, purple jasmine, longkou flower and so on. Woody flowers are: crape myrtle, pomegranate, poinsettia, Michelia, sweet-scented osmanthus, camellia, tea plum, Fusang, jasmine, Prynne, Milan, evening incense, rose, begonia, mandarin duck jasmine, triangular plum, rhododendron, pearl orchid, wax plum, hibiscus, hibiscus, hibiscus and so on. There are many kinds of foliage plants, such as pineapple, Brazilian iron, brown bamboo, southern fir, synthetic taro, bamboo taro, hulk, ruby, cycad, rubber tree, tortoise back bamboo, Zhu banana and so on.

In July, fertilization must be stopped for dormant or semi-dormant ornamental plants, especially for those succulent ornamental plants, such as sedum, fairy pen, pine chrysanthemum, leopard skin flowers, etc., to prevent plant decay.

3. Pruning, picking buds

The ornamental plants that can top and sprout in summer must be species with exuberant growth, strong germination and resistance to pruning. Heart-picking refers to the direct removal of tender tip buds with fingers. The main bonsai plants suitable for heart-picking are: hammer elm, sparrow plum, Chinan, silk cotton wood, melon seed yellow poplar, wax plum, firethorn, Luohan pine, Tamarix, Elaeagnus angustifolia, banyan tree, white wax, maple, crape myrtle, June snow, Jiuli incense and so on. Pruning refers to the use of scissors to trim off part of the new shoot to promote the germination of the lower lateral buds to form a beautiful crown or tree shape. Most of the species of bonsai plants suitable for pruning are woody ornamental plants that are not easy to pick with their fingers, such as juniper, Platycladus orientalis, Sabina vulgaris, cedar, oak, cat thorn, cypress and so on.

For those potted flower species that bloom continuously for a long time, such as Milan, rose, jasmine, pearl orchid, etc., the stump should be picked in time, and the branches that have flowered should be shrunk in time, which can promote the germination and re-flowering of the lower lateral buds, while for rhododendron, camellia, tea plum, begonia, wax plum, plum, etc., the overlong branches of the crown should also be shrunk in order to form a better crown shape.

4. Shade

July is the month with the strongest sunshine and the highest temperature of the year, so special attention should be paid to shading management for potted ornamental plants.

For those ornamental plants that like shade or semi-shade, they must be placed under the shade to avoid damage to plants caused by the scorching sun. Such as ferns, hairpins, purple calyx, tortoise back bamboo, camellia, tea plum, rhododendron, pearl orchid, crane orchid, orchid, palm bamboo, rubber tree, red (green) gem, spring feather, pink leaf, green apple, pepper grass, orchid, hanging bamboo plum, Brazilian iron, unicorn leaf, pineapple, bamboo taro, auspicious grass and so on.

For the species that like the light, you can give enough light, such as pomegranate, wisteria, crape myrtle, pyracantha, jasmine, June snow, cycad, round cypress, Platycladus orientalis, peach blossom, plum blossom, wax plum, hammer elm, sparrow plum, triangular maple, black pine, bayberry, oak, golden pine, blue orchid, Milan, rose and so on. On the other hand, it is necessary to give proper shade to Luo Han pine, bamboo and cypress, Michelia mollissima, tiger thorn, cloud bamboo, Guanyin bamboo, five-needle pine and so on.

For small, miniature and shallow bonsai, because the temperature is too high this month and the air is relatively dry, in addition to giving necessary shade, flowerpots must also be buried in wet sand, which can reduce evaporation on the surface of potted soil and help to protect the nutrient fibrous roots of plants.

5. Flowers in the air-conditioned room

In an air-conditioned room, you should choose flowers with a higher degree of leathery leaves, or with thicker cuticle, slightly resistant to dry environment, and more resistant, such as rubber tree, star anise plate, ten merit, cycad, Nanyang fir, golden sunflower, sunflower, palm bamboo, Canadian jujube, pineapple, spring feather, tortoise back bamboo, goose palm wood, one-leaf orchid, peach leaf coral and so on. It is not suitable to choose kidney fern, colored leaf grass, hulk, taro and so on. In addition, in the management, attention should be paid to the combination of watering and spraying, and away from the air outlet of the air conditioner, so as to prevent the wind from directly attacking the plant, resulting in the withered tip and scorched edge of the leaves.

6. Pest control

When the new bud of ⑴ orchid spreads its leaves in July, the leaf tip is easy to be infected with anthracnose, which gradually spreads to the whole plant, and in serious cases, it will lead to plant wilting and death. The disease may occur all the year round, poor ventilation, high temperature and humidity, continuous rain, it is more conducive to the breeding and spread of bacteria. Ventilation should be strengthened and 75% of chlorothalonil wettable powder 800 times or germicidal Dan 500 times should be sprayed during the onset period for prevention and treatment.

⑵ when plum blossom, peach blossom, begonia, red leaf plum, cherry blossom, elm leaf plum and other stumps or trunk, there is a reddish-brown sawdust feces accumulation, mostly caused by longicorn beetle larvae, which can be controlled by artificial killing, injecting inhalant pesticides, plugging poison labels, burying carbofuran and other methods, which can effectively kill the larvae in the trunk. Pay attention to the injection of pesticides, do not use dimethoate, omethoate and so on, in order to prevent drug damage.

In July, ⑶ should timely control the wild borer of Euonymus tomentosa, Populus tomentosa, Populus tomentosa and Populus tomentosa. When the insect occurs seriously, it can gnaw off all the leaves. Once found, pesticides such as trichlorfon, dimethoate or permethrin can be sprayed in time. If a certain pesticide has been used for a long time, it has produced resistance and can be changed to a new type of pesticide.

In July, some areas of ⑷ will continue to see the leaves of citrus butterfly larvae harming new shoots, such as daidai, kumquat, golden bean, bergamot, lemon, fragrant circle, rue and so on.

⑸ harms ash insects of Ligustrum lucidum, Ligustrum lucidum, water wax and ash trees. The emergence period is from late July to late August. It is necessary to choose the right time to spray pesticides such as quick culling to prevent the disease from happening again in the coming year.

⑹ Japanese tortoise wax scale is the main pest that harms Populus tomentosa, Fawu, Haitong, Camellia, red leaf plum, cedar and so on. When it is serious, it is often covered with branches and leaves. The nymph hatching period is in the first ten days of July, which can be controlled by spraying dimethoate and quick killing pesticides in time.

Fourth, bonsai modeling

In July, due to the high temperature, low air humidity and the vigorous growth of plants, it is difficult to recover from infection after branch injury, so most species of tree stumps are no longer suitable for flat binding. Still can carry on the modelling is some adaptable, tolerant plant species, and the request is the spring pot refines the seedling or the plant planted on the ground. They are: Yingchun, Ginkgo biloba, Luo Hansong, Luo Hanbai, Cuibai, June snow, black pine, melon seed yellow poplar, bayberry and so on.

In July, the modeling of the plant should be careful, light and slow, slowly, not eagerly, too hard, otherwise it is easy to cause the branch and stem of the plant to break, endangering its survival.

Solar terms in mid-July: Lesser Heat on July 7th and Greater Heat on July 22nd.