How to cultivate hibiscus flowers? Cultivation techniques of hibiscus flower propagation and pest control

Fusang flower, also known as hibiscus, is rich in flowers and colors, and most of its varieties are very popular ornamental plants. according to the editor, most of this flower is grown in the courtyard, but in fact, it is also a potted plant. Here are the cultivation techniques of potted mulberry flower propagation and pest control!

Reproduction

Cuttage propagation

From March to October, the survival rate was the highest in the rainy season and in the greenhouse in winter. The cuttings should be semi-lignified branches of the same year, or stem cuttings can be used to cut 10cm, cut off the lower leaves, leave the top leaves, cut flat, cut in the sand bed, maintain high air humidity, the temperature is 18 ℃ ~ 21 ℃, and can be transplanted 40 ~ 45 days after cutting. If the cuttings were treated with "Root Sun" rooting agent, the rooting period could be shortened.

The rooting agent "Root Sun" was particularly effective in treating mulberry cuttings. Single-petal varieties could root about 23 days after planting, and double-petal varieties could root about 29 days after planting, which was 16 ~ 22 days faster than that of cuttings without any treatment. The growth time of seedling stage is short, and there is no need to weed and fertilize. Spraying fungicides 1 ~ 2 times, watering 1 ~ 2 times a day, the survival rate can reach more than 90%, while the survival rate of double petal varieties is relatively low, the survival rate is about 40% ~ 50%. Therefore, double-petal varieties are mostly propagated by grafting, and the survival rate is high.

Grafting propagation is carried out in spring and autumn. It is mainly used for mulberry varieties with difficult cutting or slow rooting, especially for double-petal varieties with low survival rate of cutting. With branch grafting or bud grafting, rootstock with a single valve to support mulberry. Grafted seedlings can branch and blossom in the same year.

Hibiscus peony planting mulberry flowers in pots

Upper basin management

When the root system of Fusang is 3 ~ 4cm long, it can be transplanted into the pot. Potted mulberry plants are often planted at the mouth of 15 ~ 20cm pots, with 1 plant in each pot. As Fusang is not strict with the environment, but likes sunny, hot and dry climate, and is sensitive to water and fertilizer, it is necessary to do a good job in cultivation and management according to its growth characteristics, such as watering, fertilization, core pruning, light, temperature and so on.

Watering in the growing and flowering season, it is necessary to give sufficient water to the root in order to make it grow exuberantly and bloom well. Potted Fusang was watered once a day in spring and autumn, and once in the morning and evening in summer. Sprinkle more water around the site to increase the humidity in the air, but do not water at noon in midsummer, otherwise the plant will wither. Due to the low temperature in winter, the amount of water should be strictly controlled, otherwise the cold resistance of the plant will be weakened and freezing injury will occur easily. Wait for the basin soil to dry before watering in winter. The mulberry cultivated in the open field should also be watered thoroughly when the soil is dry.

Fertilizer Fusang likes fertilizer, mixed fertilizer should be applied every 15 days at seedling stage, bone powder or chemical fertilizer with high phosphorus content should be used after flower bud appears, especially a large amount of phosphorus and potassium fertilizer should be applied during flowering and bud rearing period. if nitrogen fertilizer alone not only does not blossom, but also branches grow, flower buds are difficult to form, so fertilization must be balanced. Fertilization should be reduced gradually after October and should be stopped in winter.

Pruning when the newly planted seedlings grow to 10 ~ 15cm high, remove the terminal buds in time and keep 6 ~ 8cm high. When the new branch grows to 6 ~ 8cm, the second coring is carried out, that is, the terminal bud is removed, and a plump crown can be formed by repeating it several times. Fu mulberry has strong germination and resistance to pruning, so the plant should be pruned once when the temperature rises in early spring, in order to increase the number of branches and achieve the purpose of large flowering. Pruning is based on plastic pruning, removing weak branches, disease and insect branches, slender branches, and cutting short sturdy branches and growing branches. If the growth is too fast in summer, it can be pruned once in 1 ~ 2 months.

The suitable temperature for the growth of Fusang was 15 ℃ ~ 25 ℃, 18 ℃ ~ 25 ℃ from March to October, and 13 ℃ ~ 18 ℃ from October to March of the following year. The temperature in winter is not lower than 5 ℃. If the temperature is below 5 ℃, the leaves turn yellow and fall off, and when the temperature is below 0 ℃, they are easy to suffer frost damage. Carthamus tinctorius can still grow normally above 35 ℃. The light helps the mulberry to like the whole yang, is not tolerant to the shade, the light is sufficient, the growth is strong, the disease and insect pests are few and the flowers are colorful. Lack of light is easy to drop flowers and buds, leaves withered and yellow. Even if it blossoms, the flowers are small, the leaves are dim, and they are susceptible to diseases and insect pests.

Road greening effect

Pest control and disease control

The common diseases are blight rot, leaf spot, stem rot, root-knot nematode, anthrax, coal pollution, flower rot and so on.

① epidemic rot. The leaves appear water-stained gray disease spots, which increase rapidly, develop into dark brown and rot. If the disease spot rings to cut the stem, the plant will die.

Prevention and treatment methods: at the beginning of the disease, 500-fold solution of Dysen zinc or 25% metalaxyl wettable powder can be used to spray or irrigate diseased plants, or Bordeaux solution.

② leaf spot. At the initial stage of infection, the leaves appeared light yellow and reddish yellow spots, the disease spots were round or oval after enlargement, and the leaves dried up and fell off in the later stage.

Prevention and treatment methods: 25% carbendazim wettable powder, 50% methyl topiramate 1000 times, 70% Dysen manganese 500 times, 80% Dysen manganese zinc 400 ~ 600 times, 50% carbendan 500 times, etc., sprayed once a week, 2 ~ 3 times continuously.

③ stem rot. The disease mostly occurs in the rainy season and is serious in high temperature and rainy conditions.

Prevention and treatment: during the onset period, 75% chlorothalonil 800 times solution, or 65% Dysen zinc 600 times solution can be sprayed. The seriously ill nursery can disinfect the soil with 70% dimethazone wettable powder.

④ root knot nematode disease. At the initial stage of the disease, the growth of the leaves was weak, and reddish-brown spots appeared on the edges. And expanded inward, and the leaves dried up and fell off in the later stage.

Control methods: the soil can be fumigated with dichlorvos mixture, disinfected the soil, and then sowed or transplanted two weeks later. 3% carbofuran particles 15 ~ 50g can also be embedded in the basin for prevention and control.

⑤ anthrax. It mainly harms the leaves, causing the leaves to yellowing and falling off, and when the occurrence is serious, it can cause the shoot to die.

Control methods: remove withered branches and leaves, centrally destroy or bury them in the soil; strengthen cultivation management, properly increase phosphorus and potassium fertilizer, promote plant growth and improve disease resistance; spray 1 ∶ 1 ∶ 200 Bordeaux solution, or 50% carbendazim wettable powder 1000 times, or 75% chlorothalonil wettable powder 1000 times, once every 10 days. The effect was remarkable for 2 ~ 3 times in a row.

⑥ coal pollution disease. Mainly damage leaves and branches.

Prevention and control methods: timely control of aphids and shell insects. At the initial stage of the disease, the whole plant can be sprayed with 1000 times of 40% dimethoate or 80 ~ 1000 times of EC speed.

⑦ flower rot. The germs first invade from the tip of the petals. After the onset of the disease, the disease was waterlogged and faded. Finally, the petals turn brown and rot, and the flowers fall off.

Prevention and treatment methods: at the initial stage of the disease, spray 1 ∶ 1 ∶ Bordeaux solution, or 65% Dysen zinc wettable powder 600 times, or 75% chlorothalonil wettable powder 600 ~ 800 times, once every 2 weeks, 2 ~ 3 times continuously.

Soot diseases and insect pests

Common insect pests are aphids, shell insects, red spiders, diamondback moths, etc., using stinging mouthparts to suck juice on the buds, twigs and leaves of Fusang, often causing leaves to change color or even curl.

Control method: it can be sprayed with 1500-2000 times of deworming essential oil, or sprayed with 0.01% triclofenac solution or 80-1000 times of EC speed. Once a week, 2 ~ 3 times in succession, the effect is better.

Fusang flower is a beautiful ornamental flower, and the planting method is simple and easy to survive, it likes light, as long as the flowering period will grow, it is very suitable for courtyards, gardens and other places the best flowers. Friends who love flowers can take a look at its method of potted reproduction.

Introduction of Hibiscus rosa-sinensis Fusang flower H. rosa-sinensis alias hibiscus, big safflower, hibiscus peony, demon flower, etc. It is a large evergreen shrub of Malvaceae. The stem is erect and much branched, and the crown is square, up to 6 meters high. Leaves alternate, broadly ovate to narrowly ovate, 7 × 10 cm long, with 3 main veins, apex protruding or acuminate, leaf margin coarsely serrate or notched, base subentire, bald or dorsal veins with a little sparse hairs, shaped like mulberry leaves. The flower is large, with a drooping or straight stalk, solitary in the axilla of the upper leaf, divided into single and double; single funnel-shaped, usually rose-red, double-petal non-funnel-shaped, red, yellow, pink, white and other colors, florescence throughout the year, the peak in summer and autumn. The morphological feature of Fusang flower is a large evergreen shrub of Malvaceae. The stem is erect and much branched, and the crown is square, up to 6 meters high. Leaves alternate, broadly ovate to narrowly ovate, 7 × 10 cm long, with 3 main veins, apex protruding or acuminate, leaf margin coarsely serrate or notched, base subentire, bald or dorsal veins with a little sparse hairs, shaped like mulberry leaves. The flower is large, with a drooping or straight stalk, solitary in the axilla of the upper leaf, divided into single and double; single funnel-shaped, usually rose-red, double-petal non-funnel-shaped, red, yellow, pink, white and other colors, florescence throughout the year, the peak in summer and autumn. The ecological habits of Fusang flowers are born in sparse forests in mountainous areas, with easy growth, strong resistance, few diseases and insect pests, warm and humid climate, intolerant to cold and sufficient sunshine. It grows well in the area where the average temperature is above 10 ℃. Light-loving and shade-intolerant, it is suitable for growing in slightly acidic soil with rich organic matter and pH 6.5. It is planted as hedgerow in the south and potted in greenhouse in the north of the Yangtze River basin. The cultivation technique of Fusang flower is as good as that of terminal bud, but the terminal bud of 10~12cm is generally used. Sprouting can be directly implanted into the pot to be sold, generally 2 branches per pot will be sold as a sketch pot, then sprout will be inserted into the breeding pot (connecting the end plate). Breed in confined spaces (such as plastic tarpaulins). The cuttings began to take root 35-40 days after cutting, but it depends on the time of the year, and the temperature is 22-23 ℃. The source of pruning can be obtained from the parent plant or plants for sale, and if obtained from these plants, the cultivation time will generally have to be extended by another 2-3 weeks. Pot space: sprouts should be planted in 11cm pots and fertilized with clay and lime. The space is 25030 pots per square meter. Climatic summer temperature: 18 ℃ (sunrise time) winter temperature: 16 ℃ (sunrise time). Outdoor temperature: 26 ℃. The temperature of the heating table can be 2: 3 ℃ higher than the air temperature. The lowest temperature refers to the use of curtains at night, otherwise the temperature should be increased. Humidity: relative humidity should not be too high. Shade: no need. The main insect pests of Fusang are aphids, chaff, cotton blowing and mites (commonly known as red spiders). These pests are all prick-sucking pests. That is, they use their mouthparts to pierce the leaves or epidermis of plants to absorb plant juice. The leaves of the killed plants lost green and grew weakly, which reduced the ornamental value. After the occurrence of aphids and mites, aphids and mites can be diluted by a certain number of drugs, such as aphids and mites, and then foliar spray can be used to kill aphids and mites once a week, usually 2-3 times. Bran medium and cotton blowing medium can harm leaves and epidermis. Generally, imidacloprid drugs or their modifiers can be used to dilute a certain number of times, and then spray to kill the affected parts. The harm is serious, but once every 10 days, 3 times can be basically extinct. Fusang flower dietotherapy or medicinal value of the medical information and health dietotherapy information is only for reference, can not be used as a basis for diagnosis and medical treatment. Any health problems should consult professional health care personnel, the treatment of any disease, please follow the doctor's advice. The ultimate task of protecting flowers: to love yourself, proceed from reality and follow the doctor's advice. For disease, do not be careless, do not postpone, do not give up hope, face it bravely, warm the silent world with love, and protect the inner flower field with your heart. Fusang flowers, leaves, stems, roots can be used in medicine, the main root. Flowers contain cotton anthocyanin, quercetin, cornflower glucoside, kaempferol, vinegar, straw liquid, vitamins. Leaves and stems contain salicylsterols, dandelion sterols, acetate lipids and enzymes. The root contains tannin. Fusang has a sweet and cold taste, which has the effects of clearing lung, resolving phlegm, cooling blood, detoxification, diuresis and detumescence. It is suitable for lung heat, cough, mumps, mastitis, acute conjunctivitis, urinary tract infection, nosebleed, irregular menstruation and other diseases. Fusang leaves are mainly used for skin sores. The effect of mulberry root is the same as that of mulberry flower. Rhizoma hibiscus contains pyrethrin sophorose glucose test, cornflower-diglucoside and glucopyranin, which can reduce blood pressure in anesthetized dogs. The Qing Dynasty "Materia Medica Qiuyuan" said: "there are two kinds of red and white, white people treat white dysentery, white turbid, red dysentery red turbid." "Lingnan Medicine Collection record" contains: "clear lung heat, remove phlegm fire, manage cough." "Lu Chuan Materia Medica", "cooling blood and detoxification." Treat blood fever, wing blood, blood sputum, poison sores. " Nanning Herbal Medicine Chronicles boil pig lungs to treat hemoptysis. " In the Ming Dynasty, the Compendium of Materia Medica contained Zhu hibiscus leaves or flowers, which were applied with white hibiscus leaves, Niufen leaves and white honey to treat carbuncle and parotid swelling. According to the Guangzhou Air Force's Handbook of commonly used Chinese Herbal Medicine, the Annals of Nanning Medicine and the Compendium of Common Leather drugs among the people, Zhu Geun-gen has the effects of treating irregular menstruation, blood avalanche, white turbidity, leucorrhea, cough, anti-inflammation, and bronchitis. Hibiscus leaves and stems contain dandelion acetic acid vinegar and a grain of alcohol. The Compendium of Materia Medica can treat carbuncle and parotid swelling. " Fujian folk herbs contain antipyretic toxin and carbuncle swelling. " "smash and apply abscess" in Nanning Pharmaceutical Chronicles. " The medicinal effect of Lu Chuan Materia Medica is the same as that of Zhu Geun Hua. It can be seen that hibiscus has been used in medicine in China for at least many years. The garden use of Fusang flowers Fusang bright flowers, withered toward the twilight, colorful, scattered in the south in the pool, pavilion, roadside and wall, potted mulberry suitable for living room and entrance decoration. Fusang Flower Culture method Fusang originated in China, distributed in Guangdong, Fujian, Guangxi, Yunnan and other provinces, like a warm, humid, sunny environment, not resistant to drought, not resistant to frost, must be potted to the north of the Yangtze River, and must be moved indoors in winter. The flowering period of Fusang is very long, and it blossoms continuously all the year round under the condition of 15 ℃-20 ℃. Fusang has strong resistance, extensive management, no special management, and can grow healthily as long as the following principles are mastered in maintenance. 1. The loose and fertile sandy loam should be selected for pot change and pruning, and the basin should be changed before moving out in early spring and April every year. Three things should be done when changing the basin: the first is to replace the new culture soil; the second is to cut off some of the overdense curly fibrous roots; the third is to apply sufficient base fertilizer and slightly add phosphate fertilizer to the bottom of the basin. In order to keep the tree shape graceful and with a large amount of flowers, according to the characteristics of strong sprouting ability of mulberry branches, pruning and shaping can be carried out before and after leaving the room in early spring. Each branch is pruned except at the base with 2 cents and 3 buds, and all the upper branches are cut. Pruning can promote the development of new branches, the growth will be more vigorous, and the plant shape will also be beautiful. After pruning, due to the reduction of aboveground consumption, it is necessary to properly control water and fertilizer. two。 After leaving the house, the positive tree species should be moved outside and placed in a sunny place at the beginning of May. It is also the growing season for mulberry. It is necessary to strengthen the management of fertilizer and water, loosening the soil, pulling grass and so on. Apply dilute liquid fertilizer every 10 days, watering should depend on the dry and wet condition of the basin soil, too dry or too wet will affect flowering. Post-autumn management should be cautious, pay attention to less fertilization in the later stage, so as to avoid the emergence of autumn shoots. Autumn shoot tissue is young, cold resistance is weak, cold weather will suffer frost damage. Enter the room in time to help mulberry can not bear frost, after Frosts Descent to the Beginning of Winter, you must move into the room to keep warm. The overwintering temperature should not be less than 5 ℃ to avoid freezing injury, and not higher than 15 ℃ to avoid affecting dormancy. Poor dormancy, poor growth and blossom in the following year. Furniture houses with good thermal insulation conditions facing south can survive the winter and can be covered with paper or plastic film to keep warm when the weather is colder. The first moving room should open windows every day for ventilation, pay attention to the dry and wet changes of the basin soil, and water properly. In the coldest weather, watering can prevent frost injury, but fertilization should be stopped. Fusang flower is native to China and is distributed in Fujian, Guangdong, Guangxi, Yunnan and Sichuan provinces. The propagation of Fusang flower is commonly used by cutting and grafting. Cutting can be carried out except in winter, but the survival rate is high in Meiyu season. The best cuttings are one-and-a-half lignified cuttings, which are 10 cm long, leave top leaves, cut flat, insert sand beds, and take root about 3 weeks after insertion. Grafting is mostly used for double flower varieties with difficulties in cutting, branch grafting or bud grafting, and rootstocks are supported by single-petal flowers. The survival rate of spring planting is higher than that of autumn planting, and the survival rate of ground planting is higher than that of pot planting, and the survival rate is faster, so it can blossom in the same year. In general, it is appropriate to choose biennial strong branches, or use current year semi-lignified strong branches, preferably cut into cuttings of about 15 cm in length in the middle of lateral branches, with 5 Mel and 7 nodes. Insert bed soil with good drainage, strong ventilation of coarse sand or silica, after disinfection, and then insert the bed, about 15 Mel 20 cm thick. The lower leaves of cuttings should be flattened with a sharp knife and cut in time, with a depth of 1 to 2. Immediately after insertion, pour water once, cover it with plastic film, maintain proper temperature and humidity, keep it moist but not wet, drain well, and then gradually accept sunlight to maintain an air temperature of 18 ℃ and a relative humidity of 70% to 80%. It can generally take root after 20 days, and it can be put on the basin in about a month. The cultural background of Fusang flower Fusang flower is the state flower of Hawaii. The sight of Fusang flower reminds people of the beach with blue sea and sky and the southern beauty with grass skirt at the waist. It is said that indigenous girls put mulberry flowers above her left ear to say, "I hope to have a lover," and above her right ear, "I already have a lover." but what about both sides? I already have a lover, but I wish I had one more. The appearance of Fusang flower is warm and unrestrained, but it has a unique flower heart, which is connected by most stamens and wrapped outside the stamens. The structure is quite meticulous, just like the delicate heart under the warm appearance. Red Fusang flowers reflect bright eyes, implying enthusiasm like fire, is the best decoration for grand festivals and banquets, and is also the best flower for celebrating the opening of flower baskets and flower plates. Fusang flowers are gorgeous. Malaysia regards Fusang as a symbol of living and working in peace and contentment and prosperity. It is decorated with Fusang in public places, on both sides of the street and in home courtyards. There is a traditional folk festival in Fiji called "Safflower Festival". The safflower here is Fusang. The Safflower Festival, held every August in the capital, lasts for seven days. People decorate goods with mulberry flowers, put on colorful costumes and strange masks, and parade behind the band. The young girls chosen from all over the country to take part in the campaign of "Safflower Queen" showed their elegant demeanour in floats. The best part of the festival is the selection of three "safflower queens". The box office receipts from the selection of the Queen of Safflower were donated to charity. The flower language of Fusang flower: fresh love, subtle beauty. Fusang flower is the state flower of Hawaii. the sight of Fusang flower reminds people of the beach with blue sea and sky and the southern beauty with grass skirt at the waist. It is said that indigenous girls put mulberry flowers above her left ear to say, "I hope to have a lover," and above her right ear, "I already have a lover." but what about both sides? I already have a lover, but I wish I had one more. The appearance of Fusang flower is warm and unrestrained, but it has a unique flower heart, which is connected by most stamens and wrapped outside the stamens. The structure is quite meticulous, just like the delicate heart under the warm appearance. Red Fusang flowers reflect bright eyes, implying enthusiasm like fire, is the best decoration for grand festivals and banquets, and is also the best flower for celebrating the opening of flower baskets and flower plates. Fusang flowers are gorgeous. Malaysia regards Fusang as a symbol of living and working in peace and contentment and prosperity. It is decorated with Fusang in public places, on both sides of the street and in home courtyards. There is a traditional folk festival in Fiji called "Safflower Festival". The safflower here is Fusang. The Safflower Festival, held every August in the capital, lasts for seven days. People decorate goods with mulberry flowers, put on colorful costumes and strange masks, and parade behind the band. The young girls chosen from all over the country to take part in the campaign of "Safflower Queen" showed their elegant demeanour in floats. The best part of the festival is the selection of three "safflower queens". The box office receipts from the selection of the Queen of Safflower were donated to charity. Photo of Fusang Flower how to prevent and control diseases and insect pests

Hibiscus flower, also known as Fusang flower, is a beautiful ornamental plant. Most of its flowers are bright red and grow in the Lingnan area of China. It is also an ornamental plant that can be cultivated at home, but this kind of hibiscus flower often produces diseases and insect pests in the process of breeding. You should pay attention to prevention at ordinary times. So how should hibiscus flower prevent diseases and insect pests? Next, the editor will tell you in detail.

How to prevent and control diseases and insect pests of Zhu Geun Hua

1. Control of mosaic spot of hibiscus hibiscus

The leaf spot disease of hibiscus hibiscus flowers mostly grows at the end of autumn when the weather changes. After the occurrence of this disease, its leaves will appear light yellow or reddish yellow, spots will slowly expand, and black substances will appear in serious cases. The best way to prevent the occurrence of this disease is to prevent the occurrence of the disease, to keep warm in time when the wind cools down in autumn, and to spray Dysen zinc after the disease occurs.

2. Control of stem rot of hibiscus hibiscus

Stem rot is also a high incidence disease during the growth of hibiscus flowers. It mostly grows in the rainy season and is caused by fungi. After the disease occurs, the root Bardo of the plant will appear dark brown, the subcutaneous tissue will rot, and in serious cases, the diseased plant can die. Usually, the prevention and control of this disease should prevent Rain Water from scouring the plant, and it should be sprayed with Tobujin liquid every ten days before and after the rainy season, which has a particularly good preventive effect.

3. Control of hibiscus flower-knot nematode.

Knot nematode is also the most common disease during the growth of hibiscus flowers. After its occurrence, reddish-brown spots will appear on the edge of the leaves of the plant, and spread inward, and when the leaves are serious, the leaves will fall off, and it is particularly difficult to control this disease. Usually, you can directly change the soil and change the basin when you breed at home. The new soil must be exposed and disinfected, and the old Gui can not be used. In addition, some aldicarb particles can be applied to the pro-new soil. It can prevent the disease from happening again.