What Causes Black Spots on the Leaves of Desert Rose?
Today's focus is on introducing the reasons behind black spots on the leaves of desert roses, knowledge about flowers, specifically as follows:
What Causes Black Spots on the Leaves of Desert Rose?
Black spot disease on desert rose leaves may be caused by pathogens. It is necessary to take measures to control the pathogens and improve the growing environment to alleviate the symptoms. At this time, you can dilute dimethoate in proportion, observe the effect after a few days of spraying, and use a cotton ball soaked in diluted vinegar to directly remove the black spots on the affected leaves. If the condition is not under control, remove the affected leaves directly.
What Causes Black Spots on the Leaves of Desert Rose?
The black spot disease on desert rose leaves is most likely caused by pathogens. It is necessary to take measures to control the pathogens and improve the growing environment to alleviate the symptoms. Apart from this, factors such as changes in weather may also contribute.
Black spots on desert rose leaves may be caused by exposure to direct sunlight. Desert roses have very low resistance, with delicate green leaves and poor resilience, and are not suited to strong sunlight. When the light is intense, the seedling leaves of desert roses may develop sunburn spots, affecting their ornamental value.
What to Do When There Are Black Spots on the Leaves of Desert Rose?
Black spots on desert rose leaves can be treated by diluting dimethoate in proportion, observing the effect after a few days of spraying, and then using a cotton ball soaked in diluted vinegar to directly remove the black spots on the affected leaves. If the condition is not under control, remove the affected leaves directly.
Black spots on desert rose leaves can also be treated by spraying or watering the potting soil with carbendazim, but it must be diluted in water, as direct application can cause root and leaf rot, or even death of the plant.
Prevention of Black Spots on Desert Rose Leaves
1. Desert rose potted plants should be monitored regularly. When black spot disease occurs, you can use a 50% wettable powder of thiophanate-methyl diluted 500 times to spray and prevent the damage caused by black spot disease, protecting the plant's ornamental value.
2. Water desert roses every month or so, and pay attention to spraying a 200x solution of Bordeaux mixture as a fungicide.
The above content about the reasons for black spots on desert rose leaves, hoping it is helpful for green plant enthusiasts!