1、 What is the white thing on the leaf

White things on rose leaves are white spots, which are mostly caused by the discomfort of the growth environment provided. For example, if the plant is kept in a humid environment for a long time, coupled with poor ventilation and muggy, it is easy to breed bacteria in such an environment, which will infect the plant and lead to disease. In the later stage, leaf spot disease and powdery mildew will gradually form, and there will be white powder and white spots on the leaves

2、 How to treat

1. Timely pruning: in case of this phenomenon, timely treatment is required. Cut off all the leaves with white powder on them. If some branches have become dry, they should also be cut off, and the diseased leaves and dead branches should be cleaned out to avoid infection

2. Replant: after pruning, take the plant out of the flower pot, trim the root system, cut off the rotten and blackened roots, and disinfect them. After that, prepare new basin soil to ensure looseness and air permeability. Then the treated plants will be re planted in the soil

3. Later maintenance: after planting, put the plants in a well ventilated environment, control temperature and moisturize, don't worry about direct sunlight, and then manage them normally after they recover their growth. Pay attention to the maintenance environment in the later stage. At ordinary times, be more ventilated and bask in the sun to avoid re infection