Traditional Culture Encyclopedia - Weather forecast - Give me some flowers.

Give me some flowers.

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Scientific name: camellia

Alias: Camellia, Camellia, Datura, Late Camellia, Naidong, Hawthorn, Foreign Tea, Fuchun and Toona sinensis.

Family and genus: Camellia, about 220 species of Camellia, among which Camellia, Camellia yunnanensis, Camellia sinensis and Camellia are all important ornamental flowers and trees.

Camellia is an evergreen flower, which blooms in winter and spring, with graceful flowers and bright colors. Comrade Guo Moruo praised: "Camellia blooms early, and a hundred flowers blossom." Yunnan tea people once wrote a poem praising: "Strictly speaking, camellia is a flower-saving province, and the city is full of splendor;" Everyone says peony is good, but I say peony is not as good as tea. "

Camellia originated in China. Wild camellia is distributed under valleys and jungles in Zhejiang, Jiangxi and Sichuan, as well as Laoshan Mountain and coastal islands in Shandong Province. There are also patches of wild camellia distributed between Ningbo and Siming Mountain in Zhejiang Province. Camellia trees of 1200 years old are still preserved among the trees and rocks in the south of Baoyan, Chenghua Cave, Luoda Mountain, Ruian County, Wenzhou. Lichuan county, Jiangxi Province and Momei Mountain, Sichuan Province have natural distribution of ancient tea trees in wild forests 1000 years ago.

The cultivation and distribution of camellia is mainly in the open-air planting area of the Yangtze River basin. In China, due to the cold climate, parts of northeast, northwest and north China are not suitable for planting, and almost all gardens in the country are planted. However, Zhejiang, Fujian, Sichuan, Hunan, Jiangxi and Anhui are the most widely cultivated provinces in the open field. Camellia yunnanensis is a specialty of Yunnan, which originated in Tengchong, southwest Yunnan. It is widely cultivated in the open field in Yunnan Province. After the release, it was introduced and planted in Shanghai, Beijing, Guangzhou and other places, but all of them were cultivated in greenhouses. 1824, Yunnan Nanshan tea was first introduced to Europe. Most of Camellia chrysantha is native to Guangxi, China. There are only 4 species in northern Vietnam, and it has also been found in Yunnan recently.

Camellia is an evergreen broad-leaved shrub or small tree. Branches are yellow-brown, and branchlets are green or green-purple to purple-brown. Leaves leathery, alternate, ovoid, oblong, ovoid to obovate, 4 4- 10/0cm long, tapering or acute at the top, wedge-shaped to nearly semicircular at the base, serrated edge, dark green in front, glossy, smooth and hairless at the back, short and thick petiole, hairy or hairless. Flowers bisexual, usually solitary or 2-3 inserted at the top of technical belt or between leaf axils. Pedicels are very short or inconspicuous, with 9- 1 bracts, imbricate arrangement and villi. Flowers are solitary, with 5-7 petals arranged in a 1-2 wheel shape, with a diameter of 5-6 cm, bright red color, concave or notched petals at the top and simple base shape; Stamens are well developed, reaching more than 100. Filaments are white or flush, and the bases are connected to form conduits, which gather flower hearts and make the flowers golden yellow. The pistil develops normally, the ovary is smooth and hairless, with 3-4 cells, a single style and 3-5 stigmas, and the seed setting rate is high. Yin fruit is round, and the shell is essential. Mature fruit can naturally crack from the back seam and spread seeds. The seeds are light brown or dark brown, nearly spherical or extruded into polygons, with flat and angular surfaces, hard horny seed coat, rich in oil and thick cotyledons.

Yunnan Nanshan tea is bigger than camellia, 6- 14 cm long and 3-7 cm wide, with sharp serrations on the leaf edge. Flowers are larger than camellia, with a diameter of 8- 16 cm, and some reach 22 cm; Ovary 3-5-loculed, densely filiform tomentose. Guo Ru is oblate and hairy. Camellia japonica is a small tree, 2-6 meters high, with thin leathery leaves, oblong leaves, small bony serrations or fine serrations at the edges, smooth sides and sometimes hairy. 7-8 petals, up to 17, golden yellow to light yellow, waxy luster, flower diameter 3-5.5 cm; Ovary 3-loculed, glabrous or hairy. Capsule oblate or subglobose.

Besides the original varieties, there are many horticultural varieties of camellia. There are more than 5000 kinds of camellia in the world today. There are about 300 varieties of camellia in China, which are being sorted out and studied. According to the petalization of stamens, the natural increase of petals, the evolution of stamens and the petalization of sepals, it can be divided into three types, 12 flower pattern:

1. Single petals are arranged in 1-2 rounds, with 5-7 petals connected at the base, mostly tubular. The pistil and stamen are fully developed and can bear fruit.

(1) single valve type: features as above.

2. Semidouble petals are arranged in 3-5 rounds, with about 20 petals, most of which are nearly 50 (including stamen petals).

(1) Semidouble petal type: Petals are arranged in 2-4 rounds, stamens and stamens are mostly concentrated in the center of flowers, and most stamens tend to degenerate and occasionally bear fruit. Such as' white cotton ball' and' scarlet peony'.

(2) Five-star type: petals are arranged in 2-3 rounds, corolla is five-star, stamens exist, and d8 pistil tends to degenerate. Such as' Oriental Tea'.

(3) Lotus type: petals are arranged in 3-4 rounds, corolla is lotus-shaped, pistil exists, and pistil tends to degenerate or occasionally. Shijing' and' Tiger Claw White' are representative varieties.

(4) Pine-ball type: Petals are arranged in 3-5 rounds, showing a pine ball shape, and both females and vitamins exist. 64. Pine nuts and' big pine nuts' are representative varieties.

Third, the double petals are mostly petal-shaped, and the petals naturally increase, with more than 50 petals (including stamen petals).

(1) Osmanthus fragrans support type: petals are arranged in 1 round, and developed stamen petals gather in the center of the flower to form a ball of about 3 cm. The representative varieties are' Golden Panzhizhi' and' White Zhu Bao'.

(2) Chrysanthemum-shaped: Petals are arranged in 3-4 rounds, and a few stamens gather in the center of the flower, with a diameter of about 1-2 cm, forming a chrysanthemum-shaped corolla. Pomegranate Red' and' Fengxian' are representative varieties.

(3) Hibiscus type: the petals are arranged in 2-4 rounds, and the stamens are clustered in the stamen petals near the center of the flower, or scattered in several stamen combinations, forming a turnip-like corolla. "Hongwurong" and "Zhu Huabao" are representative varieties.

(4) Crown type: Petals are arranged in 1-2 rounds, a large number of stamens gather on them, and several large stamens occupy the center to form a crown-shaped corolla, with' Flower Buddha Ding' and' Lifting Cage' as representative species.

(5) Hydrangea type: the arrangement of petals is not obvious, and there is no obvious difference between petals and stamens. A few stamens are scattered in stamen petals, forming a hydrangea-shaped corolla. The representative varieties are' Dahongqiu' and' Qixinhong'.

(6) Radial pattern: the pattern is arranged in 6-8 rounds, which is radial and often hexagonal. Pistil and stamen no longer exist. Fendan,' Hexagonal White' and' Fenxia' are representative varieties.

(7) Qiang mushroom type: flowers are arranged in 8-9 rounds, forming several layers, and pistils and stamens no longer exist. 64. More than 20 varieties such as pink, thick-skinned lotus and snow tower.

Famous varieties are: Green Ball, Snow Peony, Huang Guan, Flower, etc. The radiant' Yuanyang Guan Feng' and so on; Crown-shaped' Flower Buddha Ding' and so on; The cover is very strong' Flower Crane Feather' and so on. ; Lotus pattern' pink ten scenes',' white ten scenes' and so on. Laurel-hugging golden ball' and so on; Semi-double' white ball' and so on; Chrysanthemum-shaped' wind fairy' and so on; * * * More than 20 varieties. Camellia likes warm and humid climate, avoids scorching sun, likes semi-bright scattered light, and is also resistant to shade. The tolerance of camellia to low temperature varies with varieties. For example, single-petalled varieties close to the original species have stronger cold resistance than ordinary varieties, and can tolerate the low temperature of-10℃, while rare varieties have lower tolerance to low temperature.

The highest humidity that camellia can tolerate is 35℃, and if it exceeds 35℃, it will get sunburn. When the temperature rises above 10℃, it begins to germinate and stops growing above 30℃. The optimum growth temperature is between 18-25℃. The initial flowering period of camellia is 2℃, and the suitable flowering temperature is between 10-20℃.

Camellia likes high air humidity and avoids dryness, so it requires good soil drainage. In rainy and typhoon seasons in the south of the Yangtze River, attention should be paid to drainage to avoid root rot and death. D It can grow well in areas with annual rainfall of 65,438+0,200mm. Camellia likes fertile, sulfur pine, slightly acidic loam or humus, and can grow in the range of PH 4.5-6.5, especially in the range of 5.5-6.5. Alkaline soil is not suitable for camellia growth. The new shoots of camellia germinate twice in 1 year. 1 The new shoots begin to germinate from mid-March to mid-April and stop growing in mid-May, which is generally called spring shoots. The second germination is from the middle and late July. September, known as the summer tip; After that, it will enter the stop growth period. The growth of spring shoots is large, but that of summer shoots is small. Under normal circumstances, the flowering period of a single flower is about 7- 15 days. If the same double flower blooms in late autumn and early winter, the life span of a single flower can reach about 1 month.

Yunnan Mountain Tea is shade-tolerant, and likes semi-sunny environment. Poor cold tolerance, like warm weather, optimum temperature 18-24℃, sensitive to temperature, 5-6℃ may freeze. I like high humidity air and breeze. Suitable for planting in loose acidic soil rich in humus. Camellia is a tropical plant, which likes warm and humid environment. Waterlogging tolerance, suitable for secondary evergreen broad-leaved forest in valleys, partial negative. The suitable temperature for growth is 23-30℃, and it can tolerate 2-4℃ for a short time in winter, but the low temperature period cannot be too long.

In order to cultivate rootstocks or new varieties, camellia seeds can be used for sowing. In the first and second months of each month, the harvested fruits should be put in a ventilated place indoors to dry in the shade. Seeding should be done immediately after the shaded fruits are cracked and the seeds are taken out, so as not to lose the germination ability.

If you can't sow immediately in autumn, you need to dress the seeds with wet sand and store them until early spring and February of the following year. Generally speaking, autumn sowing germinates longer than spring sowing. Yunnan Nanshan tea has been propagated by high-tech grafting for hundreds of years, and the rootstock is mostly the excellent rootstock' Populus alba' of Yunnan Nanshan tea. During grafting, 2-3-year-old' Populus alba' tea is pre-planted in a crock, a long-handled funnel-shaped bamboo shelf is erected near the camellia mother tree to be grafted, and the rootstock is placed in it to facilitate grafting. Then choose L-2-year-old stout branches, the diameter of which is similar to that of rootstock. The suitable grafting period is May-June, and after 100- 120 days, the cambium on both sides heals, and the grafting stability is cut off from the lower part of the joint, and the branches and leaves above the rootstock joint are pulled out to become independent camellia seedlings. Camellia is propagated by conventional methods such as sowing, cutting, grafting and layering at high altitude. At present, in vitro tissue culture of seed embryo, leaf, stem tip and axillary bud has been successful.

1. Camellia seedlings propagated by cutting can bloom in the third year. The suitable cutting time in East China is the rainy season, that is, the middle and late June. The second logging took place in late August and early September. In these two periods, the cutting temperature was about 30℃, with shading facilities, and the temperature could be controlled at about 25℃, which created good conditions for moisturizing and preventing wilting. When inserting and shaking, you should choose the semi-mature branches with rich external tissues, complete leaves, full leaves and no pests and diseases. The cutting length depends on the specific situation, generally 4- 10 cm. When cutting, the top two leaves sleep at the base. The profile of cuttings is inserted with cuttings, and the density of cuttings depends on the size of leaves. General row spacing10-14cm, and plant spacing of 3-4cm. It is required that the leaves do not overlap, and the cutting depth is about 3 cm. Shallow cuttings take root quickly, while deep cuttings take root slowly. After insertion, spray water with a fine watering can in time. It usually takes about 1 month from cutting to healing and rooting. The key to survival is to keep enough humidity effectively in the early stage of cutting, hang curtains on the east, west and south sides of the shade shed to keep out the wind, and cover the shed surface with two curtains to reduce the influence of hot air flow and avoid direct sunlight. Pay attention to spraying water on the leaves, so as to spray B frequently and less, and keep the leaves often covered with a thin water film. Indirect spraying water on curtains is an effective method to reduce the temperature and improve the humidity in the bed. When new roots are produced, it is necessary to gradually increase sunshine, and only cover 1 layer curtain in June of 438+00, so that tea seedlings can fully receive sunlight and accelerate lignification. 165438+ 10, tear down the shade shed and transform the shed for the winter.

Second, grafting.

(1) budding rootstock: This method can make full use of propagating materials and grow rapidly. Shan 96 Camellia oleifera and Camellia oleifera are often used as rootstocks, the former has strong affinity and the latter has late incompatibility. The seeds are sown in the sand bed and grow for about 2 months, and the seedlings are as high as 4-5 cm, which can be dug and grafted. Select semi-lignified branches that grow well, sprout L leaves from bottom to top and cut them off one by one. Make full use of the length of internodes, cut the plaid scion into wedges and put it in a wet towel. When digging rootstock sprouts, clean the grinding wheel, pay attention to heat preservation, then cut the sprouts at 1- 1.5 cm above the leaves, cut off the root tip to make the total length 6-7 cm, and then tilt the cotyledon suture to split the stem longitudinally, the depth is the same as that of the scion cutting. Insert the cut scion into the split of the rootstock in time, align one side to form a layer, and use paper. Then the grafted seedlings are planted in the seedbed with the row spacing of 8×2 cm. Fertile and loose sand is suitable for seedbeds. After sowing, the seedbed should be insulated with a plastic shed and covered with a double curtain. Generally 10- 15 days began to heal, 20 days. In about 25 days, the film can be uncovered at night to make it ventilated and exposed. After that, gradually strengthen the ventilation and appropriately increase the light. After the new buds germinate, remove all the films. With careful management, 3- 4 new leaves can grow in that year.

(2) Semi-ripe branch grafting: head grafting with rented camellia oleifera or adult seedlings of camellia oleifera as rootstock. With the strong growth potential of rootstock, scions grow rapidly, and large plants of famous camellia can be cultivated within 1-2 years.

1. Choose a good rootstock: choose a plant with healthy plants, full buds and no pests and diseases as the rootstock. Grafting rootstocks in summer, pruning before the end of February, grafting rootstocks in autumn, cutting and pruning in the first half of June, and cutting off weak branches, drooping techniques, cross techniques and over-dense branches.

2. timely grafting: the suitable temperature for grafting is 25-30℃. From late May to early June and late August in Zhejiang. Late September is the right time for grafting. At this time, the skin is easy to open, the interface is faster after transplantation, the survival rate is high, and the management is easier.

3. Grafting methods and problems that should be paid attention to

(1) For branches with a diameter greater than 1 cm, skin grafting method is adopted, that is, a knife is carved in the upper, left and right parts of the rootstock, reaching the xylem, and the skin is pulled down to the same length as the scion section, and then the cut scion is glued to the inner side of the rootstock, and the scion is wrapped with plastic. If the thickness of rootstock and scion is similar, it is better to adopt belly grafting.

(2) The rootstock is broken three times, 1 time is to break the top of the rootstock during binding, so as to weaken the top advantage of the rootstock and promote healing; For the second time, after the 1 th new shoot of the scion was completely lignified, 1/3 branches on the rootstock were cut off, and some branches and leaves were reserved, which was beneficial to the development of photosynthesis and root absorption function. For the third time, after the second new tip of the scion was completely necessary, it was sawed at the same height as the interface for about 45. Cut off the roots. Breaking the anvil by stages can play a role in shielding germination and moisturizing.

(3) The success of grafting in high temperature season mainly depends on the control of high temperature. To build a shade shed, cover it with double curtains, so that there is basically no direct sunlight in the shed, and spray water around noon to cool down, so that the local microclimate temperature can be controlled below the atmospheric temperature. The daily average temperature should be lower than 30℃, and the maximum temperature should not exceed 35℃.

(4) The sprouted buds on the rootstock should be erased in time.

Camellia has two cultivation methods: ground planting and pot planting.

1. Planting camellia on the ground: it is divided into garden cultivation and nursery cultivation. First of all, we should choose a suitable planting site to meet its ecological requirements. Landscape planting should be equipped with shade trees, and good shade trees should be planted in rows and fenced. Appropriate improvement should be made to the dissatisfied soil. In warm areas, planting time is generally better in autumn than in spring. Fertilization should focus on three key periods, namely: topdressing in February-March, promoting the growth of spring shoots, and supplementing fertilizer after flowering; Topdressing in June to promote the growth of secondary technology and improve drought resistance; In June, base fertilizer 10- 1 1 was applied to make the new roots slowly absorb fertilizer, which improved the cold resistance of school plastering and laid a good foundation for the growth in the next spring. Intertillage weeding and garden cleaning are one of the effective measures to control pests and diseases and enhance tree vigor. Winter ploughing can eliminate overwintering pests. 5-6 times of intertillage weeding are needed throughout the year. However, cake should be stopped in high temperature season in summer to reduce soil moisture evaporation.

The main pests of Camellia oleifera are tea caterpillar, tea moth and tea aphid. The main diseases are: tea ring spot, camellia algae spot and camellia anthracnose. The prevention and control methods are: clearing litter and eliminating the source of infection. In order to enhance the disease resistance of plants, cultivation management, rational fertilization and rational irrigation should be increased. Drug control. Light a lamp to trap and kill.

Pruning, bud picking and flower picking: intensive pruning is not suitable, as long as pests and diseases, over-dense skills and weak skills are deleted. However, for newly transplanted large and medium-sized seedlings, in order to keep the balance of water evaporation and absorption, some branches can be cut off appropriately. Camellia is a multi-flowered tree species, especially on plants with weak growth potential, one branch can bear more than 10 buds, which consumes a lot of nutrients. Therefore, it is necessary to sparse the buds in time and leave one or two buds on each branch.

Second, potted camellia:

The key to its management is:

1. The size of the pot should be adapted to the proportion of seedlings. It is best to add pine needles cut by L/2-L/3 Igf into the garden soil, and then apply them after 1 year decay, and the effect is better.

2. The pot feeding time is winter 165438+ 10 or February-March in early spring. Pot feeding should be stopped near germination stage and avoided in high temperature season.

3. When the seedlings are newly put into the pot, the water should be poured enough and the bottom of the pot should be permeable. Drink water in moderation at ordinary times.

(1) The watering amount should change with the seasons: when plants enter the growth and germination period around Tomb-Sweeping Day, the watering amount should be gradually increased. After the new plants stop growing (around the end of May), watering should be properly controlled to promote flower bud differentiation. June is the rainy season, so water should be prevented. If there are signs of water accumulation, the basin surface should be tilted in time to let it flow away, otherwise the new roots will rot easily, causing the whole plant to wither and die. In summer and hot season, the evaporation on the leaves is large, so it is necessary to spray water on the leaves of varieties with thin leaves or plants with weak growth when necessary. Water spraying should be carried out in the early morning or evening, and water spraying is prohibited at noon. In early autumn in the south of the Yangtze River, "autumn tigers" often appear. At this time, watering to prevent drought is still a top priority. In winter, plants gradually enter the dormant period, and the watering times should be reduced accordingly.

(2) The water temperature should be close to the soil temperature: it is forbidden to pour cold water under the scorching sun, so as not to cause physiological imbalance and defoliation of roots.

(3) Water according to the weather and the reaction of plants: If the temperature is high or windy, the evaporation of the leaves will be accelerated, so water or spray more water. When the air humidity is high, reduce the amount of watering. If the leaves wilt due to drought, the plants should be immediately placed in the shade, watered and sprayed. When spraying water, in order not to make excess water sneak into the basin, the plastic film can be tied to the trunk and extended out of the basin. In this way, proper soil moisture can be maintained, and when the stems and leaves recover or sprout again, and the old leaves fall, they will be transferred to conventional management.

(4) Water according to the habits of different varieties: generally, camellia varieties and fast-growing varieties with large leaves and flowers need more water, so water more. Precious varieties, such as' Ten Scenes',' Peach Blossoms',' Sprinkled Golden Beads',' Impatiens',' Green Beads', etc., have little evaporation, and excessive watering will cause leaves and buds.

4. Shading and cold protection: Camellia likes to be warm and humid, and supercooling and overheating are not conducive to its growth and development. Generally, greenhouse cultivation is not needed. Sufficient sunshine should be given in spring and rainy season, otherwise the branches will grow thirsty, which will easily cause black spot disease and scale insect damage, and the branches will also be prone to moss medicine, leading to plant aging and death. In summer and autumn, it is necessary to shade and cool down in time. In winter, the natural cooling of mules or long-term low temperature will cause the basin soil to freeze and the plants to freeze to death, so anti-freezing measures must be taken in time. The suitable temperature for indoor potted seedlings in winter is 3-4℃. If the temperature exceeds 16℃, it will promote early germination, and even cause defoliation and bud drop in severe cases. The fertilization, pruning and pest control of potted camellia are basically the same as those of open field cultivation. Yunnan Nanshan tea should be planted in a place with deep soil layer, loose soil, good drainage and a little shade, and the seedlings should be potted for easy management. Its growing environment should be cool in summer and cultivated in greenhouse in winter. Yunnan Nanshan tea grows slowly, and its hair is difficult, so it is not suitable for further cutting. Camellia can be potted in multiple rows at seedling stage, and can be planted in the field after 4 years. It is a negative tree species and should be planted under tall and cool trees. In the case of high temperature and high humidity, anthrax is most likely to be infected, so it should be prevented in time.

Direction and approach of Camellia oleifera breeding;

One is to breed new varieties with novel colors, such as obvious color enhancement, golden yellow or in different background colors. Death has yellow lines and feet.

Second, camellia is graceful, but it has no fragrance, which is a fly in the ointment; It is necessary to make use of the original species of scented camellia, such as: short-petalled tea, hairy tea, camellia oleifera, pointed core tea, Ryukyu core tea, etc. Interspecific hybridization or interspecific hybridization with camellia japonica was carried out to screen out new species and varieties with fragrance.

Third, the flowering period of camellia is mostly concentrated in spring, and there are fewer varieties that bloom in autumn. It is necessary to cultivate more excellent varieties that bloom in autumn.

Fourth, strengthen the breeding of cold-resistant varieties. Camellia is native to the south, and horticultural varieties cultivated in the open field are mostly limited to the south of the Yangtze River basin. Therefore, the cultivation of cold-resistant varieties and varieties should be studied as a special topic. For example, in Britain, the tea and camellia of Nvhongshan introduced from China soon became a famous species group Williams. These hybrid varieties are very hardy and can grow and bloom in severe winter areas in Britain. In the cold-resistant breeding of Camellia oleifera in China, semi-wild cold-resistant varieties Camellia oleifera and tea tree, which are native to Laoshan Mountain and its nearby islands, are promising hybrid parents.

5. Camellia has different crown shapes, but not many are suitable for research. It is also worth studying how to choose a dwarf plant with slender, soft and drooping branches to bloom one after another in technology and form a garden style.

6. The pollination rate of natural hybridization of camellia is much higher than that of artificial hybridization, so we should pay attention to the hybrid seeds under natural conditions, and there will be strange species when selecting from seedlings. Yunnan camellia is big and beautiful, but it has no fragrance, and its color is mainly red and monotonous. Yellow and blue are missing. Compared with camellia, it has poor cold resistance. These shortcomings are also the main direction that breeders should focus on. Through interspecific hybridization, it is expected to cultivate satisfactory new varieties. Facts have proved that using seedlings to select seeds is a shortcut to obtain excellent new varieties. Yunnan Institute of Botany has done this and achieved remarkable results. Camellia japonica has golden yellow flowers, which is a color lacking in ornamental camellia. Therefore, camellia chrysantha is the most ideal germplasm resource for cultivating camellia chrysantha. Camellia japonica can be crossed with Camellia japonica, Camellia yunnanensis and Camellia sinensis to obtain a certain seed setting rate. There are two breeding directions: one is to cultivate camellia with yellow, big flowers and double petals; One is to cultivate flowering or fragrant camellia (all over the sky).

Camellia has high ornamental and economic value, and is widely used in landscaping and home cultivation. From 65438 to 0955, Hangzhou Botanical Garden opened 50 mu of Mulan Mountain tea garden and planted more than 50 kinds and varieties of camellia. Kunming Botanical Garden and Yunnan Nanshan Tea Garden are also tourist attractions with local characteristics.

Camellia is an important material for landscaping, with bright color, long flowering period, green leaves and bright crown color, and has the habit of growing well under high crown, so it is often widely used in parks, natural scenic spots and historical sites. In the garden, it can be planted in groups or combined with other tree species, and can also be viewed as the main scene. Camellia is also a good potted plant, and some shrub species are often used as potted plants, which are common from south to north. North of the Yangtze River, indoor anti-freezing or greenhouse cultivation is needed in winter.

Camellia has strong resistance to harmful gas-sulfur dioxide, and also has obvious resistance to hydrogen sulfide, chlorine gas, hydrogen fluoride and chromic acid smoke. It is suitable for greening the factory area polluted by harmful gases, protecting the environment and purifying the air.

Camellia blooms in winter and has a long flowering period, so it is a good material for cutting flowers. The flowers and roots of camellia can be used as medicine. Many kinds of tea seeds are rich in oil and are good edible oils. Camellia Tengchong is a nourishing oil. The tea tree in Nanshan, Yunnan Province is tall and magnificent, with thick shade and green leaves, huge flowers and special flowering period, which can be planted alone on the lawn and in front of the court. Or planted on both sides of the road and at the entrance of the square. Can be potted for viewing, can also be cut flowers, flowers can also be used as medicine. Fruit can extract oil. Wood can be used for carving. Camellia chrysantha is a rare ornamental tree species in winter. Its flowers are full and can be used as cut flowers. Its leaves can be used as a substitute for tea to help treat hypertension; Flowers can cure hematochezia; Seed oil can be used in food or industry; Wood can be carved; The flower extract is yellow and can be used as an edible dye.