What to do if the leaves of the rose turn white
This article introduces how to deal with the phenomenon of rose leaves turning white and the related green plant care methods for treating white leaves,接下来 the editor will introduce to everyone.
Roses are very popular plants, symbolizing love and longing for love. When they bloom, they give people a longing for love, although love is just a beautiful dream, and although the flowers wither, the love in one's heart does not fade. When caring for roses, people often encounter phenomena such as yellowing leaves, white leaves, and root rot. So, what should we do if the leaves of roses turn white? Let's talk about the solutions for white leaves of roses.
【One, the reasons for the yellowing of rose leaves】
<1>
When you find white spots on the leaves during the cultivation of roses, you should consider the occurrence of powdery mildew. So what is powdery mildew? Here, the editor will explain it to everyone. First, find out the cause, and then apply the right medicine.
<2>
Powdery mildew often occurs on leaves, tender stems, flower stems, flower buds, and petals. Initially, it appears as irregular yellow-green spots with indistinct edges. As the lesion expands, a white powdery layer will appear on the surface, and eventually, numerous black spots will grow.
<3>
The affected area will turn gray, covering the surface in patches with unclear edges, appearing dirty white or light gray. When severely affected, the leaves will shrink and become smaller, the young shoots will twist and deform, and the flower buds will not open. Powdery mildew appears in March to April, and as the temperature gradually rises, the condition will worsen.
【Two, solutions for white leaves of roses】
What to do if the leaves of roses turn white
<1>
Roses infected with powdery mildew start in May and gradually spread from June to July. A white powdery substance can be seen on the leaf surface and young shoots of roses, which can cause the leaves to turn yellow and fall off when severe.
<2>
When powdery mildew is found, it is first necessary to improve the cultivation conditions. In dry seasons at the end of spring and beginning of summer, frequently spray cool water on the leaves to inhibit the onset. It is also necessary to promptly cut off the diseased leaves and burn the affected flower stems.
<3>
Apply more phosphorus and potassium fertilizers. In severely affected areas, choose disease-resistant varieties. When the disease occurs, spray multiple times with carbendazim or a Bordeaux mixture of 0.3-0.5 degrees, which is effective. Especially during the plum rain season, it is necessary to disinfect roses in a timely manner and take preventive measures.
Above is a detailed explanation of what to do if the leaves of roses turn white and the treatment methods for white leaves of roses, for everyone's reference and suggestions!