Why are my roses turning yellow
Roses have always given people a warm and romantic impression. They are endowed with many special colors and have many legends. For example, in ancient Greek mythology, roses were created by Zeus, the god of the universe. The flower language of roses is love, bravery and nobility. Roses are the universal language of expressing love no matter where they are. It not only has a beautiful appearance and romantic meaning, but also has many uses. It is a very good raw material for medicine or food. If the leaves of roses turn yellow during the cultivation process, it may be due to temporary discomfort caused by the change of environment, or it may be due to insufficient or excessive light, improper watering, improper fertilization, unsuitable soil, unsuitable temperature, or infestation by diseases and insect pests. caused. The following is the detailed explanation.
Discomfort caused by environmental changes
When a rose changes to a growing environment, it may cause yellow leaves due to temporary discomfort with the environment.
Solution: Don’t worry too much, the yellow leaves will improve after the roses adapt.
Insufficient or too strong light
When the light is not enough, the rose will not have enough light and will wilt and turn yellow. When the light is too strong, the leaves may be burned, causing them to dry up and turn yellow.
Solution: Give the roses sufficient light. Be careful not to expose the roses to strong light for a long time. If the sun is too strong in summer, pay attention to shade.
Improper watering
Roses have high requirements for water. Too much water will cause root rot, and too little water will cause lack of water. Both cases will cause yellowing of the leaves.
Solution: Properly supply water to the roses. If there is too much water, it can be drained. If there is insufficient water, increase the watering frequency appropriately.
Improper fertilization
Applying too much or too little fertilizer can cause yellow leaves. Too much will burn the roots, and too little will cause the roses to grow without nutrients, both of which will cause the leaves to turn yellow.
Solution: When applying too much fertilizer, pay attention to watering and diluting it; when applying too little, add additional fertilizer, and pay attention to the amount of fertilizer applied.
Soil discomfort
Using non-aerated soil or alkaline soil can also cause rose leaves to turn yellow. Roses need soil with strong water permeability to take root and develop. Too heavy soil will prevent roses from taking root properly, and alkaline soil will cause poor growth of roses.
Solution: Change the rose soil to acidic soil with good drainage.
Temperature discomfort
Too high or too low temperatures can also cause rose leaves to turn yellow. If the temperature is too high, the water in the rose will evaporate. If the temperature is not cooled down or the water is replenished in time, the rose will dry up and turn yellow. Frostbite plants can also cause leaves to turn yellow when the temperature is too low.
Solution: Roses are suitable for growing in a warm and humid environment, preferably 15℃~25℃. When the temperature is high in summer, you should pay attention to cooling down the roses. You can move them to a shaded place or spray an appropriate amount of water on the leaves and surrounding areas. In winter, pay attention to moving indoors for thermal insulation protection.
Insect and disease infestation
Yellow leaves will also appear when rose plants are infested by diseases and insect pests. For example, if roses have root rot or are infested by red spider mites, the leaves will dry up and turn yellow.
Solution: Timely prevention and control, use some commonly used sterilization and insecticide drugs to intervene, such as “carbendazim”, “Thiophanate”, etc.
Potted roses love the sun and cannot be exposed to direct sunlight. When the ambient temperature is higher than 35°C, the plants need to be moved to a semi-shady area and provided with shading measures. At a suitable temperature, the plants can be exposed to sunlight for four hours every day. Hours.
If you water too frequently, water will accumulate in the soil, causing the plant roots to have difficulty breathing, becoming waterlogged and rotting, causing the leaves of the plant to turn yellow. Water according to the “see dry, see wet” method.
If the environment is too closed, the roses will lack oxygen, which will cause a large number of bacteria to breed in the potting soil, causing the plant leaves to be infected by bacteria and turn yellow. Move the potted plant to a ventilated place, and then cut off the withered and yellowing leaves. .
Roses are susceptible to powdery mildew during the growth process. You need to observe the leaves of roses regularly. If you find that the leaves are infected by bacteria, you can purchase carbendazim and spray it every seven to ten days. The effect will be seen after a month.
Original article author：Fragrant Road Full，If reprinted, please indicate the source.：https://www.theroadfull.com/article/2878.html
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