Key points of summer conservation of longevity flowers

The longevity flower is also a succulent plant, but because the florescence of the longevity flower can be as long as more than 4 months, it is named that the longevity flower will enter the dormancy period after entering the summer, in order to make the longevity flower bloom better in the coming year, the method of cultivating longevity flowers in summer needs to be adjusted accordingly.

Longevity flower

I. Lighting

May and June belong to the alternating stage of long and short days, and the sunshine time gradually changes from short to longevity. For longevity flowers, which are more sensitive to light, it is necessary to stop replenishing light in time so as not to cause overgrowth of plants. In order to create a short-day environment for longevity flowers, the greenhouse can be shaded. Sunshade should be carried out from 5 to 6 p.m., and the sunshade net should be opened at 8 a.m.

In terms of light intensity, longevity flowers are light-loving plants, and the suitable light intensity is 30000 to 40000 lux. Excessive light will cause burns to plants, but too low light intensity will easily lead to overgrowth of plants.

Second, temperature

The suitable temperature for longevity flower growth is 17 ℃ to 27 ℃. Shade the plant when the summer temperature is too high, otherwise it will cause damage to the plant. Choose a shading net with a shading rate of 60% to 70%. If the shading rate is too large, it is also easy to cause overgrowth of the plant.

III. Fertilizer and water management

In this season, the fertilization of longevity flowers should follow the principle of "watering frequently and applying less nitrogen fertilizer". The balance of nitrogen, phosphorus and potassium should be achieved at the seedling stage, and after entering the flowering stage, it is necessary to give priority to phosphorus and potassium fertilizer and reduce the amount of nitrogen fertilizer. Thin application of nitrogen fertilizer can effectively control the overgrowth of longevity flower plants and improve stress resistance and disease resistance.

Now is the best stage of longevity flower cutting propagation, but because of the high temperature, the greenhouse content is easy to dry, so cutting seedlings should increase the amount of water spraying and water spraying times, keep the substrate moist, which is conducive to plant rooting.

In the aspect of watering, due to the high temperature in summer, the transpiration of the plant and the rate of water evaporation in the basin soil also increase, so it is necessary to gradually increase the watering frequency to give the plant sufficient water to ensure its healthy growth. The longevity flowers with excessive growth can be regulated by the application of plant growth regulator Daizhuangsu, and it is best to apply it under wet soil conditions, which is too dry or too wet is not conducive to the absorption of pesticides by plants.

IV. Plan to promote flowering

Finally, growers need to be reminded that since the longevity flowers from May to June will be on sale from July to August, and July and August happen to be the off-season in the market, producers must make sure that the amount of reminders from May to June is not too large, otherwise there will be sales pressure. "starting" the longevity flower in this season can prolong its growth period, which not only helps to ease the sales pressure, but also promotes the plant shape to be fuller.

Key points of summer conservation of courtyard flowers

Key points of summer conservation of courtyard flowers

(1) the influence of summer climate on flowers in summer, the temperature is low, the light is strong, Rain Water is more, it is the growing season of most flowers. However, due to changeable weather, hot sun exposure, more diseases and insect pests, such as improper management, it is very easy to affect the growth of flowers. It can be said that the work of maintaining flowers in summer is mainly temperature management, fertilizer and water management and shading, cooling and increasing humidity and so on.

General family cultivation of flowers and potted flowers, because of their different origin, the temperature requirements are also different, should be treated differently. If you put them together without distinction, there will inevitably be different results. Flowers that like high temperature can adapt to grow well, while those who are afraid of high temperature can not grow well because they cannot adapt. So, how to know the temperature requirements of the flowers? You first find some information to understand the climate of the origin of these flowers, and then take necessary methods and measures to create a temperature environment suitable for flowers to pass the summer safely.

(2) Summer flowers should be on guard against "if there is no sunshine, the flowers will not flourish." However, exposure or too high temperature is also disadvantageous to the growth of flowers. Especially in the hot season, when the scorching sun is in the sky, if the outside hot temperature is close to the upper limit of K for flowers, it will make the plant in a weak state of poor growth, and when the temperature exceeds the upper limit, it may cause death in a short time. In general, when the temperature reaches 35-40 degrees Celsius, flowers stop growing. A high temperature of more than 45 degrees Celsius can make the proteins in flower cells denatured and solidified, and there is a danger of heat death at any time. China is a monsoon climate area with hot summer and cold winter. The sun is hot in midsummer. The highest temperature in most areas can reach more than 30 degrees Celsius, and the highest temperature in many areas can reach 35 degrees Celsius. The continuous high temperature of more than 30 degrees Celsius for more than 5 consecutive days is also a common phenomenon in the Yangtze River basin. The strong R in summer is the main source of high temperature, and sunscreen is the main way to ensure the safety of flowers in summer. The general and simple method of sun protection is to place potted flowers in different places according to the different heat resistance of flowers. For example, in foliage plants, such as tortoise back bamboo, Brazilian wood, rubber tree, rich tree, green apple, etc., should be placed in a semi-overcast ventilated place. Flowers and bulbous plants, such as rhododendron, camellia, calla lotus, Zhu Dinghong, magnolia, etc., should be placed in a cool and ventilated place; succulent plants, such as cactus, crab claw orchid, arrow lotus, tequila, longevity flower, sedum, stone lotus, plum, kumquat, impatiens, pomegranate, Fusang, magnolia, rose, etc., are placed in places with plenty of sunshine and ventilation. However, in rainy weather, the flowerpot should be placed on the side to prevent stagnant water. The flower proverb has "Yin Camellia, Yang Peony, half Yin and half Yang four Seasons eight" is this truth. Another point is that the specific site for keeping flowers is also very fastidious, such as the house is sitting east to west, the flowers should be placed on the east balcony for maintenance to avoid afternoon bright light and high temperature evaporation. If the house is facing south, flowers should be placed on the north balcony for maintenance.

Of course, there are also some plant species that are not afraid of the sun, but do not grow well when the sun is less, such as jasmine and sunflowers in ornamental flowers, cycads in foliage plants, and so on. + once, this kind of flowers had better not be put directly on the cement fence of the balcony, but put two mud bricks on the cement fence and put the flowerpot on the brick. On the one hand, it can insulate the heat, on the other hand, it also has the function of ventilation, which avoids the flowers being baked in the sun and reduces the temperature to a certain extent. Of course, bricks must be placed steadily and pay attention to safety.

(3) the method of shading in summer hot and high temperature in summer, especially the strong sun exposure, often burn the flowers, appear leaf tip, leaf edge withered and yellow, and even the whole plant dies. Therefore, proper shading or maintenance under the shade shed in high temperature season in summer and autumn is a common and feasible measure to prevent direct sunlight and reduce temperature.

Most of the greenhouse flowers are semi-negative plants and can not stand the high temperature in summer. therefore, before the arrival of summer, before the arrival of summer, Ching Ming Festival should be moved out of the greenhouse, and most of its species need to spend the summer under the shady shed. Some cut flowers and woody flowers, such as camellia and rhododendron, also need to blossom and grow well in the shade.

The types of sheds can be divided into two categories: permanent sheds and temporary sheds. The frame material of permanent shade shed is cement or steel pipe, and it is relatively tall, with a height of more than 3 meters. this kind of shade shed is usually used by large-scale botanical gardens or flower gardens and flower-growing professional households. The frame material of temporary shade shed is often wooden or bamboo, with a height of less than 3 meters, which is used for family flower cultivation. It is a temporary shade shed built in summer and dismantled in autumn in the courtyard or balcony.

The cover at the top of the shade used to be a Reed curtain, but of course its effect was good. Now generally use black or gray plastic sunshade net, it is cheap, light weight, shading effect is also good.

If you build a shade shed in the courtyard and place potted flowers, you must sting bricks or cushion an inverted flowerpot at the bottom of the pot to facilitate drainage and ventilation. If placed directly on the ground surface, it should be supplemented with cinder or coarse sand to facilitate drainage, and soil contamination of branches and leaves can also be avoided when raining or watering.

(4) the methods of cooling and increasing air humidity in summer.

① spray: summer often lasts high temperature, the air is very dry, some heat-resistant flowers will also be depressed, even if more watering, its effect will not be a. Because at this time the root water absorption capacity of flowers has been greatly weakened, we should quickly prepare an atomization sprayer to spray the leaves and stems of flowers from time to time, which can not only increase the air humidity of the small environment around plants and play a cooling role, but also clean the dust or sludge on the leaves of potted flowers to keep the leaves clean and fresh. If there are conditions, equipped with a device that can automatically spray water fog, the effect of humidification and cooling will be more ideal. It is worth mentioning that spray is by no means spraying water. Spraying too much water with a spray can will cause some flowers and trees to rot.

② watering: dry ground or balcony cement floor irradiated by F1 in midsummer, the temperature can be as high as 40 degrees Celsius, even more than 50 degrees Celsius, and most flowers can not stand the high temperature above 35 degrees Celsius for a long time. At this time, the simplest and most direct way is to sprinkle water to the site where the potted flowers are put, and spray water to the leaves, so as to humidify and cool down and reduce the evaporation of water on the leaves. According to the measurement, the ground temperature can be reduced by 1-5 degrees Celsius immediately after sprinkling water, and the leaf temperature can be reduced by 1-2 degrees Celsius a few minutes after spraying water, thus effectively reducing the thermal injury harm of high temperature to flowers. It is best to use a sprinkler, because it can achieve uniform sprinkling, easy to control the amount of water, can supply water according to the actual needs of flowers, and improve the utilization rate of water. Some negative flowers, such as asparagus, Saxifraga, rhododendron, tropical orchid, etc., should have high air humidity on the leaf surface, basin space and ground, and can basically meet their requirements by spraying water with a spray can.

③ sets up sand trough: flower lovers all agree that it is very difficult to raise camellias and rhododendrons in Nanjing, Wuhan and other cities. The reason is that the hot summer is a factor, and the dry air is more clear about the "natural enemies" of flowers in a humid environment. In order to meet the special needs of these flowers, one can be surrounded by mud bricks in the corner of the balcony. The size of the area depends on the size of the balcony and the number of flowers. The ground is covered with a layer of coarse sand about 5 cm thick. Put some flowers that need high humidity, such as camellias, rhododendrons, gentleman orchids, orchids on the sand, and sprinkle water on the sand 2-3 times a day. With the continuous upward evaporation of the stagnant water in the sand, the humidity of the small environment has been increased and the temperature has been reduced, creating a relatively cool and humid microclimate environment suitable for the growth of potted flowers over the summer.

④ other methods: can also use deep basin evaporation method, that is, the plant in a small amount of water in a large, high-depth container cultivation, will also get a stable high humidity environment.

Another way is to put the flowerpot in a slightly larger diameter pot and put water-absorbing materials such as shredded paper, rags, peat soil or sawdust in the gap between the two pots, which will gradually release water vapor. in order to achieve the purpose of increasing the humidity of the surrounding environment.

(5 > Water management of summer flowers watering is the most frequent and important management work for flower growers. If the soil is too dry, the flowers will wilt and even die; while the soil is too wet, it will suffocate the roots and even rot the roots.

① watering time: in the four seasons of the year, the summer watering time is the most fastidious. If you don't pay attention to it, the flowers will be injured or even die. Generally speaking, in summer, watering is best before 8 o'clock in the afternoon and after sunset in the evening, when the air temperature, soil temperature and water temperature are similar, which is more suitable for watering. Do not water in the hot sun at noon, because the pot soil is very hot at noon, when cold water is poured up, due to a sudden drop in soil temperature, flowers are easy to catch a cold like people, and flower root hairs are stimulated by low temperature, affecting the normal absorption of water by the root system. Even flowers planted in the ground should not be watered at noon. If you forget to water the potted flowers in the morning and find that the potted flowers are wilting badly at noon, when you need to water them immediately to replenish water, you must move the potted flowers to a cool place. After 20-30 minutes, wait for the soil temperature to drop before watering.

Practice shows that foliage plants, such as brown bamboo, Nanyang fir, pocket coconut, etc., can be watered around 10:00 in the morning and sprayed several times in the afternoon; flowering plants, such as geranium, Milan, camellia, rhododendron, etc., can be watered thoroughly in the morning and sprayed several times in the afternoon according to the situation; succulent plants, such as crab claw orchid and cactus, can be watered thoroughly in the morning and sprayed in the afternoon to increase air humidity, without having to be watered every day.

② watering method and amount of water: potted flowers should be watered thoroughly whenever they are dry, that is to say, flowerpots should be watered thoroughly as soon as they are dry, and do not water half of the water, while many beginners who grow flowers are prepared to water half of the water. The so-called half-cut-off water means that although there are many times of watering, the amount of water each time is not enough, the water only moistens the topsoil layer, and the subsoil is dry, so a half-cut phenomenon of upper wet and lower dry is formed in the basin. The muddy slurry of the topsoil will cause the upper roots to rot and die over a long period of time. The lower dry makes the middle and lower soil very dry, which will cause the middle and lower roots to senescence or die early due to lack of water for a long time, while a hard hardened layer is usually formed at the junction of upper wet and lower dry, which makes the potted flower roots difficult to tie down, underdevelop, grow slowly or not long at all, which is also an important original W which seriously affects the quality of potted flowers and leads to the death of potted flowers. Check whether the potted flowers are dry or wet, you can knock on the flowerpot up and down to listen to the sound, such as crisp, dry, if heavy, not dry. Watering times and amount of water should be determined according to seasonal changes, weather conditions, flower species and their growth, and an appropriate amount must be achieved. In the period of high temperature in summer, the evaporation is the largest, which needs to be watered frequently; in the period of prosperous growth, more water and nutrients are needed, so it should be watered more frequently; wet flowers should be watered more, but xerophytic flowers should be watered less; herbaceous flowers should be watered more and woody flowers should be watered less. In short, when you carry a kettle in your hand, you must treat it differently and must not distribute it evenly. You must water more when you should water more and less when you should water less. It must be noted that when flowers are in bloom, do not water too much to prevent falling flowers.

Water quality and water temperature of ③ watering: the quality of water for watering flowers is also very fastidious. It is best to use Rain Water to water flowers. If the conditions do not permit, you can only use tap water, then the tap water should be stored in a container for a few days to allow it to precipitate, on the one hand, the chlorine in the water can be volatilized, on the other hand, the temperature of the water is close to the air temperature. the temperature difference between water and air temperature should not exceed 5 degrees Celsius.

④ watering points for attention: general flower lovers, like to use some traditional methods of cultivation, in fact, there are some methods of flowers are not only not beneficial, but also harmful. If you pour the leftover tea into the basin at will, you can only see the soil layer of the tea in the basin, especially the temperature in summer. If the time is a little longer, the tea will become moldy, resulting in a moist topsoil and dry soil in the middle and lower layers, affecting the seepage and permeability of the soil. As another example, some people often water the flowers with Amoy rice water, fish soup and bone soup, thinking that this can replenish the plant and make it grow stronger. In fact, this is also unscientific. Although these waters contain certain nutrients, the oil plants are not absorbed and can only be absorbed by plants after ripening and fermentation.

Do not use dishwashing water, face water to water flowers, because these water contains a certain amount of salt, in the long run, it will often change the composition of the soil. In addition, some people also like to buckle the eggshell upside down in the flowerpot and let the egg white flow into the soil, thinking that the egg white is also a good fertilizer. It goes without saying that its function is the same as rice water and fish soup.

The water for watering flowers stored in vats and buckets is not as long as possible. In fact, over a long period of time, on the one hand, the water quality will change, on the other hand, it is also easy to get insects. Therefore, it is better to store water no more than 3 days in summer and autumn.

Rain Water should pay attention to timely drainage in summer. After heavy rain, if water is found in the basin, the basin can be dumped and discharged; in rainy weather, potted flowers can be moved to shelter from the rain, in case Rain Water is too much, which is disadvantageous to the growth of flowers.

In addition, some flowers are neither dry nor hydrated. When there is no one to take care of the family temporarily, a cloth strip can be buried in the pot. One end of the cloth strip is immersed in the water basin adjacent to the flowerpot, and the water can slowly moisten the soil through the cloth strip. You might as well try this simple method of automatic watering of flowers.

It is particularly important to note that some summer dormant flower species, such as cyclamen, do not need watering.

(6) the ventilated flowers in summer should also breathe, and there must be sufficient and fresh air for their respiration and photosynthesis. Poor ventilation will hinder the exhalation, and then affect the normal growth and development of flowers. Due to the limitation of the breeding site, especially after making a closed balcony, the ventilation condition of potted flowers is poor, especially in the case of high temperature, more Rain Water and high humidity in summer, and the temperature is more likely to rise because of poor ventilation conditions. the unfavorable ecological environment of muggy and poor air provides favorable conditions for the breeding and reproduction of diseases and insect pests such as rot, shell insects, red spiders and so on. It will also aggravate the damage to flowers caused by high temperature in summer, so it is an unfavorable factor seriously affecting the safety of many flowers. The main solutions are as follows: properly reducing the planting density of flowers, increasing the distance between potted flowers, carrying out reasonable shaping and pruning, such as cutting off some over-dense long branches, dredging part of excessive buds, cutting off sprouting tillers, controlling the overgrowth of some flowers, and so on. All the above measures can improve the ventilation conditions of the site environment to varying degrees.

(7) pay attention to rain damage and wind damage in summer rainy season, due to heavy rain and rainfall for a long time, sometimes continuous rainfall for 5-7 days, balcony, corridor humidity, often resulting in a large number of fallen flowers. Therefore, in the rainstorm, the potted flowers should be moved to shelter, or covered with textile cloth or household film on the balcony or corridor, and put away the film and textile cloth after the rain. Summer is also a hurricane-prone season, such as blooming flowers should be moved to shelter in case of hurricanes. Some balconies, corridors often have strong winds, especially high-rise buildings, hanging strips of cloth or agricultural film, can play a role in preventing or reducing wind damage.

(8) the prevention and control of flower diseases and insect pests in summer is the season of high incidence of diseases and insect pests because of high temperature and humidity and poor ventilation in summer. Diseases that are easy to occur in summer are chlorosis, powdery mildew, coal fouling, black spot and so on.

Chlorosis, also known as chlorosis, most acidic flowers, such as camellia, gardenia, orchids and so on, often appear this disease. The damaged leaves showed milky white spots, or all yellowed and white, and local necrosis of the leaves in severe cases. Prevention and treatment of this disease can be done without organic fertilizer, ferrous sulfate, increasing light and changing basin soil, etc.

Powdery mildew often harms young stems and young leaves. At the beginning of the disease, the leaves appear white dots, and then gradually expand as if covered with a layer of white powder; stems and leaves become grayish brown after damage, and in serious cases, plants can die because of weak growth. To prevent and cure the disease, we should strengthen ventilation, increase light, reduce air humidity, remove diseased leaves and burn them in time, spray with carbendazim, thiophanate diluent or Bordeaux solution, or lime-sulfur mixture once a week.

Coal fouling disease harms branches and leaves, soot mold is punctate at the initial stage, and then gradually expands and thickens. Spot connection can cover the whole leaf and affect plant photosynthesis. The disease is often accompanied by scale insects under wet conditions. Spraying carbendazim diluent for the control of shell insects has a good effect.

Black spot mainly harmed the leaves, the damaged leaves were small round black spots at the beginning, then expanded into round or near round, and finally the disease spots were linked together, at this time the whole leaf was scorched black and withered off. Rose and rhododendron are the most susceptible to this disease. If diseased plants are found, they should be separated from spraying immediately, and diseased leaves and branches should be burned centrally. Control methods: 70% powder topiramate 800 times or 50% carbendazim 1000 times can be sprayed every 10 times from June to August. Bordeaux solution has a better control effect.

The common pests of flowers in summer are aphids, red spiders, shell insects, whitefly and so on.

Aphids harm almost all indoor foliage plants. There are many kinds of aphids and they reproduce quickly. They cluster on the young branches and leaves to absorb juice, and their excretion can also attract and infect other diseases and insect pests. The aphids can be sprayed with dimethoate or dichlorvos diluent; you can also light a cigarette and turn it upside down slightly, so that the smoke fumigates the sprouts of aphids, and the aphids can roll off one after another; soak 2 cigarettes in 1 cup of tap water and spray them with smoke water for 2 times to remove aphids.

Red spider is also a kind of pest with many species and rapid reproduction, which is very small and often occurs in the environment of high temperature and T dryness. When the leaves are netted and sap is absorbed, the injured leaves show dense gray-yellow spots or patches, and when the leaves are serious, the leaves are curled, withered and yellow. It can be sprayed with dimethoate 1500-2000 times dilution, or it can be used to kill red tarantula with hot pepper boiled water. There are red spiders in peanuts. Put the damaged potted flowers in a jar that can hold the flowerpot, light a plate of mosquito incense, cover the cylinder mouth with plastic film, tie it tightly with a rope, open a small hole, smoke continuously for 1 hour and 2 hours, and then take out and check it out. It can be seen that there is a layer of red ash, that is, all the red spiders have been killed.

There are also many species of scale insects with different shapes, often parasitic in clusters, absorbing branch and leaf sap and secreting wax, blocking leaf stomata and inducing coal fouling disease, resulting in yellow branches and leaves, slow growth and serious death of the whole plant. It often harms evergreen, cycads, orchids and cacti. Control methods: spray or smear with 50% dimethoate EC 800 times dilution or 80% dichlorvos EC 1000 times dilution; spread a piece of paper on the surface of the basin soil, and then wipe off the shell insects on the branches and leaves with a soft brush; you can also gently remove the shell insects from the plant with small bamboo slices or matchsticks to prevent excessive force from injuring the leaves; combined with pruning, cut off the leaves and branches.

Summer is coming! The key points of summer conservation of these potted plants must be known!

With the coming of summer, the temperature rises and the weather turns hot, spending summer has become a difficult problem that many flower lovers have to face. Especially hanging orchid, asparagus, green pineapple, rich tree and so on, once the maintenance is improper, I am afraid it will be very difficult to spend this hot summer in good condition. Here are some key points for the summer conservation of some common potted plants:

Picture: green pineapple

Green pineapple

Summer is the peak growth period of green pineapple, at this time, we should pay attention to keep the soil moist, properly apply some nitrogen fertilizer, avoid light exposure, put it in the scattered light environment, in addition, spray water to the leaves to improve air humidity.

If the water culture of green pineapple, do not add nutrient solution in summer, once found that the water quality becomes turbid, immediately change water, reduce bacterial infection, leading to root rot.

2. Asparagus

One thing that asparagus needs to pay attention to in summer is moisturizing, spraying more water, reducing exposure to the sun and strengthening ventilation.

Third, the rich tree

Rich trees like the environment of high temperature and high humidity, and the high temperature in summer is very conducive to the growth of rich trees, so it is generally necessary to increase the frequency of watering at this time. In addition, to maintain a humid environment, to avoid the air is too dry, resulting in leaves yellowing, avoid exposure.

Picture: hanging orchid

Fourth, hanging orchid

Hanging orchid can withstand high temperature, but not exposure, if you put it on the balcony in summer, you should pay attention to shade, if the light is too strong, it is easy to sunburn its leaves. In addition, to increase the frequency of watering, more ventilation, can often spray water to the leaf surface, increase the surrounding air humidity, avoid dry tip.

Camellia

In June, camellias begin to differentiate into flower buds, so it is necessary to supplement appropriate amounts of phosphorus and potassium fertilizer, such as potassium dihydrogen phosphate and so on. Many people's camellias do not blossom, mostly because of the lack of fertilizer.

6. Longevity flower

Summer temperature rises, longevity flowers enter the dormancy period, at this time must reduce the amount of water, water is very easy to lead to plant rot, light still needs to be sufficient, but do not expose yourself to the sun. When the light is too weak, the plant is easy to grow.

Picture: Camellia

7. Jasmine

In summer, jasmine flowers are in full bloom, so it is necessary to ensure sufficient light to promote plant flowering. Once a week, fertilizer combined with nitrogen, phosphorus and potassium, such as cake fertilizer and retting organic fertilizer, can make the flowers bloom more and more fragrant. Jasmine likes acidic soil and can spray ferrous sulfate every ten days to keep the soil moist and prevent moisture from getting on flowers during the growing period.

8. Coppergrass

Codonopsis lanceolata is most afraid of water shortage. High temperature in summer and rapid evaporation can easily lead to water shortage. Flowers suggest that it is best to plant it in a half-water and half-soil way, so that it does not have to be watered every day, and sufficient water can make it grow more luxuriantly.

The above is the introduction of the summer maintenance points of some common potted plants, I hope it can be helpful to everyone!