1. Physiological reasonsSome varieties of this plant are like this, and their leaves will naturally turn red. You can identify its variety by its leaves. If its newly grown leaves are red, it means that its flowers will also be a similar color. 2. Rust1. SymptomsIf its leaves turn red, another possibility is that it has rust. 2. MethodClean the area around it, remove diseased branches, leaves and buds, and burn them in a concentrated manner. Wrapping the wound with plastic film can prevent the invasion of bacteria and make the wound heal faster. If you keep it in a room, make sure it is ventilated and in a dry environment. 3. Powdery Mildew1. SymptomsIf its leaves are bent and red, it means it has powdery mildew. White powder will appear on the back of the leaves, the leaves will bend, and the new tree shoots may even die. The flowers cannot bloom on time, or the posture of the flowers will not be very beautiful. 2. MethodIf you use medication during its growing period in spring, you can use thiophanate-methyl and benomyl alternately. During the illness, you can treat it with methyl thiophanate. When the white-pink substance in the diseased area turns gray, the disease is almost cured. 4. Red spider1. SymptomsIf there is something red on the leaves, it is because they are infested with red spider mites. 2. MethodYou can go to the market to buy special plant pesticides, spray them on the front and back of the leaves and on the branches, spray 3-4 times in a row for 3-4 weeks, and you can get rid of the diseases and insects on them. Generally, if you keep it at home, the ventilation is not very good, so it will often get diseases and insects. You should spray it with water frequently, maintain the humidity, and kill insects every month. |
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