What if the leaves of Chinese rose turn yellow?

Friends who have raised roses at home may sometimes encounter yellowing of rose leaves, so what about yellowing of rose leaves?

Rose leaves yellow for the following reasons:

1, excessive watering, watering should master the principle of dry and thorough watering.

2, too little light, generally need more than 6 hours of light, in order to green flowers.

3. The air is not circulated, the leaves are withered in a dry and sultry environment, and powdery mildew is easy to obtain.

4, the indoor temperature is too high or too low.

5, lack of nutrients, rose like fertilizer, to thin fertilizer frequently watered, otherwise the leaves yellow, do not bloom.

6, improper fertilization, excessive fertilization or application of undecomposed organic fertilizer, resulting in "burning roots" caused by yellow.

7, the soil should be loose fertile, poor drainage soil hardening, yellow leaves, or even death.

8. Pests. By red spiders, scale insects and other pests damage, but also cause yellowing leaves.

Rose breeding precautions:

1. Soil. Potted roses should be rich in humus and slightly acidic fertile sandy soil, not alkaline soil. In the spring of each year before the new buds sprout to replace the pot soil, in order to facilitate its vigorous growth, soil change will help the season flowering. Rose flowers can be planted in pots of various materials, and earthen pots can naturally be planted.

2. Light. Rose love light, in the growing season to have sufficient sunshine, at least 6 hours of light a day, otherwise, only long leaves do not bloom, even if the bud, after flowering color is not bright also not fragrant.

3. Watering. To rose watering is exquisite, to do see dry see wet, not dry do not water, water is poured thoroughly. Rose afraid of flooding, basin can not have water, water easy to rot roots. Summer season should be watered once a day, see the basin soil surface white can be watered. Winter dormancy period must be less watering, keep half wet can.

4. Winter. In winter, if there are warm conditions at home, it is best to keep the room temperature above 18℃, and there should be more than 6 hours of light every day. If you don't have any insulation, let it sleep naturally. In the beginning of winter, after the leaves fall off, each branch only retains 5 cm branches, all branches above 5 cm are cut off, and then the flowerpot is stored in a cool place at about 0℃. The pot soil should be dry, but it should not be excessively dry to prevent dry death.

5. Fertilization. Roses love fat. Potted roses should be fertilized frequently. In the growing season, they should be watered once every ten days. No matter what kind of fertilizer is used, remember not to overdo it to prevent fertilizer damage and damage to flowers and seedlings. However, fertilizer should not be applied during winter dormancy.

6. Trim. Cut off the dried buds after flowering. When rose buds appear, pick a good shape bud left, the rest are cut off. The goal is to leave only one bud on each branch, and the flowers will be full and gorgeous in the future, and the flowers will be large and fragrant.

7. Ventilation. Whether it is garden cultivation or balcony cultivation, must pay attention to ventilation. Good ventilation, roses can grow healthy, but also can reduce the occurrence of diseases and insect pests.

8. Temperature. Rose likes cool and warm climate environment, afraid of high temperature. The most suitable temperature is 18℃--28℃, when the temperature exceeds 32℃, flower bud differentiation will be inhibited. Therefore, in the high temperature of summer, roses usually do not bloom, even if there are a small number of flowers, but also much less than at room temperature. At high temperatures, the pot can be moved to a cool place for maintenance.