There are many kinds of flowers. Due to different climatic conditions in the origin, the requirements for air humidity are also different. In cultivation, flowers are usually divided into three categories according to the requirements of air humidity. Organic fertilizer is usually divided into animal organic fertilizer and plant organic fertilizer. Animal organic fertilizer, such as human manure, livestock manure, feathers, hoof horns, bone meal, fish meat and eggs and other domestic waste. Put the flowerpot in a shallow water storage plate (basin), which is covered with gravel so that the bottom of the 20 gallon pots cannot touch the water. With the continuous evaporation of water, it increases the air humidity around the flowerpot. In the late stage of plant development, potassium fertilizer is conducive to photosynthesis, especially for the production of bulbs. Therefore, potassium fertilizer is indispensable in the whole growth process of flowers. The principle of topdressing: apply more nitrogen and potassium fertilizer during vegetative growth and more phosphorus fertilizer during flower bud formation. Fertilize in the morning and water before and after cracking. Strong seedlings can be applied more, and weak seedlings should be applied less. Do not rot, dilute or apply. Forced fertilization outside the root is foliar fertilization. Spray the fertilizer solution onto the leaves of flowers to supplement the deficiency of root fertilization. Put a few pieces of orange peel into the fertilizer solution. Because the orange peel contains a large amount of aromatic components, the odor in the liquid fertilizer can be removed, whether wet or dry. If the time is long, put some more. Several common symptoms of deficiency and their prevention and treatment methods are introduced as follows. The nitrogen deficient leaves are light green or yellow white, the branches are thin and weak, the new leaves at the top are gradually smaller, easy to fall leaves and grow slowly. Potted flowers are limited by specific environmental conditions. When the 1.5 gallon pots soil can not maintain the normal growth of flowers, there will be yellow leaves, thin branches, few flowers and small fruits, which reduces the ornamental value, so it needs to be fertilized frequently. Flowers need fresh air to grow. When the air is polluted, some flowers have the ability to resist harmful gases and become "guards" to protect the environment. According to the humus content and viscosity degree in the forest humus soil, mix it with garden soil or river mud and thin human feces and urine, stack it for a period of time, and use it after full fermentation and maturity. Flower wastes that like acidic soil can be divided into the following categories according to their adaptation to the acid-base conditions of the soil: acid resistant flowers (P4 ~ 5), Du Penghua, hydrangea, stall flower, colored leaf grass, purple duck grass, ferns, orchids, etc. Suitable for weakly acidic flowers (P5 ~ 6) Begonia, Zhuding red, cyclamen, camellia, jasmine, Milan, Michelia, five needle pine, palm plants, primrose, big rock maple, brandy, etc. If flowers are planted in mounds with heavy viscosity, they do not want to seep after watering. When they are dry, they are easy to crack and harden, which is not conducive to the growth and development of flowers. This is mainly because the soil particles are too fine and lack of organic matter. For physiological disorders, they should be removed in time by improving management and changing the environment. Replace the 25 gallon pots on time, apply enough base fertilizer, add hoof pieces, rotten cake fertilizer, chicken manure, etc., and replace it with pot soil rich in humus. Peat and humus are the materials that can absorb a lot of water and can not be used by plants, but they can not absorb a lot of nutrients. Shallow pots or mud pots with large caliber are often used for sowing. The pots are too small and the soil is easy to dry. The planter shall be placed in direct sunlight and kept at room temperature of 15 ~ 25 ℃ to facilitate germination. The temperature is too low, the emergence is slow, and the seeds are easy to rot. Asexual reproduction can enhance stress resistance and enhance ornamental value. Very small seeds such as guayeju, big rock Tung, pubaohua, sijilou grass and Begonia can be sown with soil, and there is no need to cover the soil after sowing. From March to April of each spring, it is also necessary to trim the weak and withered branches and yellow branches on the potted small tomatoes, so as to reduce the consumption of nutrients and promote the potted small tomatoes to sprout strong new branches. In addition, the long branches on the potted small tomatoes should be short treated. During the growth of potted small tomatoes, they are vulnerable to diseases. It is necessary to trim the infected branches in time to avoid further deterioration of the situation. During later maintenance, it is necessary to spray bactericide on the leaves every 7 ~ 10 days to promote the healthy growth of potted small tomatoes. During the period of pregnant buds of potted small tomatoes, it is also necessary to trim the excessive flower buds to supply nutrients to the main branches, so as to improve the yield of potted small tomatoes(5 gallon plant pot). In addition, it is also necessary to remove the fruit growing more on a branch of potted small tomatoes to reduce nutrient consumption. During the growth period of Dendrobium candidum, granular fertilizer can be added appropriately, which will make Dendrobium candidum grow more vigorously. When we fertilize Dendrobium candidum in the later stage, we can use foliar fertilizer once a half month. When using foliar fertilizer, the dosage must be less, generally about three kilograms per gram. When the growth height of side branches is too high, the branches can be shortened. Pruning the main branches before peony flowering, you also need to prune the main branches, cut off the redundant flower buds in the strong main branches of peony, and basically keep only one best flower bud on each flower branch on the plant. However, if the main branch is very strong, it can also appropriately leave one more flower bud. In this way, controlling the number of flower buds is very helpful to the quality of flowering. The flowering period of peony is from May to June every year, but there are always some flowers that will open early. Therefore, when the peony is in the flowering period, there will sometimes be the phenomenon that some flowers have withered(1 gallon pots). At this time, we must cut off the broken flowers. In addition, we should cut off the flowers with bad appearance in the flower branches in time. Do you know how to prune peony? It is the most beautiful time when peony is in bloom, so we must trim branches and buds at this time to achieve the most beautiful appearance. Try to cut short the long flower branches, preferably usually neat, so as to maintain the beautiful plant type of peony flower as soon as possible. When there are withered branches and dry branches on the plant, such branches should be cut off. Cut the branches without nutrients and wait for the autumn after the flowering period of peony has passed. It is also necessary to trim the flower branches in time to maintain the flowers. Since most of the nutrients of the peony plant are consumed in flowering, and the flowering period has passed, the nutrients of the peony will be insufficient. Cut off some decaying flower branches in the plant in time, so as to keep the nutrition of the peony plant as much as possible. Pruning dead branches and leaves when pruning peony in autumn, the most important thing is to cut off dead branches and leaves. In addition, it is also necessary to cut away the dense branches and buds in the plant, which can reduce nutrient consumption and help peony survive the cold and windy winter. Finally, clean up the fallen leaves in the (plastic garden pots), and then focus on burning them, so as to prevent pests. Peony pruning precautions 1. Pruning leaves when pruning peony, pay attention not only to pruning branches, buds and flowers, but also to pruning peony leaves. Pruning leaves is usually after flowering and flowering. Especially for the flower branches with many leaves, we need to cut off most of the leaves on the branches and buds, leaving only 5 ~ 7 leaves, which can also ensure the supply of nutrients on the flower buds. In winter, when the growth is slow, the whole body can be pruned, and the branches that are too long and too dense can be cut off. Some weak branches, pest branches also need to be cut off. During the maintenance period, it is inevitable to have yellow leaves, especially the yellowing caused by diseases and pests. The yellow leaves should be cut off in time to avoid further infection. If you find that the branches and leaves are too lush, you can also cut them off to make them more ventilated, transparent and conducive to growth.

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