The requirements of rose on soil quality are not very strict. General mixed soil can grow, but it is better to use soft and fertile weak acid soil. Ordinary mixed soil can be properly added with some ferrous sulfate. When potting, a layer of base fertilizer should be laid at the bottom of the pot first. Pay attention to the air permeability of the soil. The roots of the flower are mainly distributed in the soil layer of 30-40cm deep. Therefore, when ploughing, it should be turned to 60cm deep, so as to ensure the air permeability of the soil.
Watering the perfume rose should be adjusted according to season and growth. Spring and autumn are the blooming periods of this flower. At this time, sufficient water should be ensured, and the amount and frequency of watering should be increased appropriately. If we want to prune the rose, we need to control the water before pruning to stabilize the growth of the plant, and then increase the amount of water after pruning to promote the growth of the rose. If the locking strength of the soil layer is weak, the frequency of watering should be increased reasonably. If the soil layer has high viscosity and good water retention, we should pay attention to reducing the amount of watering, or it will lead to the withering of rotten rose roots.
The rose roses like heavy fertilizers, compost and other organic fertilizers are the most suitable. Each rose needs about fifteen kilograms of fertilizer. The flowering time of perfume rose is longer. During the development process, we should pay more attention to fertilizing. Generally, potassium fertilizer, phosphate fertilizer and nitrogen fertilizer are applied to top dressing, which can effectively promote its growth and is conducive to flowering.
In order to make the rose more sprouting, we should pay attention to pruning the plants. The dormancy period is the best time for pruning. During the construction, the branches are simply cut short, and the new shoots growing inward are cut off. After one year's planting, all the thin branches can be cut off, and then half the strong branches can be cut off, which is conducive to improving the quality of flowering. More than three years of perfume rose, trimming every year to keep the overall shape beautiful.
Rosa chinensis is often attacked by black spot, powdery mildew, red spider and aphid. Plum rain season and hot and humid summer are the high incidence period of diseases and insect pests. The frequency of spraying and sterilization should be increased to prevent diseases and insect pests.
