First, the flowers at the end of flowering should be fertilized.
After the spring growth period and flowering period, the flowering period of many flowers began to draw to a close in May. Take the longevity flower as an example. Now some longevity flowers are in full bloom, and some are even gestating buds, but most of them have ended or will soon end. At this point, after pruning, quick-acting compound fertilizer should be applied in time. Because the longevity flower consumes a lot of nutrients after vigorous growth and flowering, it is now provided with quick-acting fertilizer to quickly absorb nutrients and improve its resistance, so that it can easily spend the summer before the arrival of high temperature.
Second, flowers cannot be fertilized when they enter dormancy.
Different varieties of flowers have different heat resistance. Some flowers can be exposed to the sun and still bloom, while others can be burnt in a sun. There are many flowers, when the temperature reaches above 30℃, they will stop growing and enter the dormant period. Flowers in dormancy, please remember, don't fertilize. Even diluted nutrient solution need not be used. Because of its stagnant growth, the demand for nutrition is minimal. At this time, fertilization will only increase the burden on its roots, and under the accumulation of fertilizer, it is likely to burn the roots. If the flowers are cultivated indoors at constant temperature, the flowers will not go into dormancy, and all maintenance and fertilization are normal.
Third, you can't apply decomposed organic fertilizer.
Many flower lovers like to make their own organic fertilizers, such as rice washing water, bean cake water and soybean water. Only when these soaked waters are completely decomposed can they become the nutrients needed by plants. If you pour it into the flowerpot without complete decomposition, the decomposition process will be completed in the flowerpot, which will not only produce odor, but also generate heat during the decomposition process, causing root damage. And there will be a lot of mosquitoes, if it is on the balcony, or even indoors, it will be uncomfortable to think about it. Therefore, to use these self-made nutrient solutions, they must be thoroughly decomposed and cannot be used during hibernation.
Fourthly, the fertilizer efficiency of foliar fertilizer is better than that of root irrigation.
When we fertilize some flowers in summer, it is better to spray some water-soluble fertilizers on the leaves, which is better than root irrigation. Like jasmine, gardenia, hydrangea, etc., potassium dihydrogen phosphate diluent is needed for fertilization. Not only the effect is good, the plant absorbs it quickly, but also the dosage is well controlled. For example, potassium dihydrogen phosphate solution, with 1000 times of water solution, can be sprayed once a week after a crop of flowers, and flowers can be restored in less than 1 month. If it is root irrigation, it will be absorbed by the root system, which will not only slow down the transformation of nutrients, but also cause most nutrients to be lost with water, resulting in waste.
Five, different types of fertilizers can not be used indiscriminately.
Planting flowers requires fertilization because plants need nutrients. Flowers planted in the ground can take root deeply and ask the "mother" of the earth for nutrients, but potted flowers can only use external fertilizer. Moreover, different flowers need different nutrients at different growth stages and cannot be applied indiscriminately. Like green plants, nitrogen fertilizer should be given priority, and compound fertilizer and organic fertilizer should be used together to ensure the lush, green and shiny state of green plants. For flowering plants, compound fertilizer and organic fertilizer can be used together at ordinary times, and phosphorus and potassium fertilizers can be used during flower bud differentiation and before flowering, just like potassium dihydrogen phosphate to strengthen nutrients. The plants that are still bearing fruit should be fertilized in front like flowering plants, and potassium dihydrogen phosphate should be added after bearing fruit to make the fruit swell and sweet. Spraying urea water near maturity can make the fruit more shiny and attractive in color.
Six, flowering plants can not be fertilized.
There are many flowers in summer, such as blue snowflakes and jasmine flowers. Many flower lovers will say, alas, it is in flowering period and cannot be fertilized. This is not comprehensive. The flowers are blooming, and fertilization is definitely not possible. Fertilization will affect the flowering time and shorten the flowering period. So fertilization is not allowed during flowering. But fertilization is to prune the remaining flowers and branches after the end of a crop of flowers. At this time, fertilization can effectively promote the growth of branches and the differentiation of flower buds, and quickly bloom the next crop of flowers.
Conclusion:
When planting flowers in summer, you can't fertilize indiscriminately. You should master these six doorways. If you do something wrong, you can only "get busy in vain."