1、 Leaf spot control

One of the most common diseases of this flower is leaf spot. Generally, it damages the leaves of this flower. Because this disease occurs frequently, it must be prevented in time. Leaf spot disease is generally caused by a fungus. After this harmful fungus erodes the leaves of Hibiscus sunflower, there will be black spots on the leaves in the early stage of the disease, but with the development of the disease, the black spots will gradually become black patches, and then cause the leaves to roll up and then wither and fall slowly

In fact, the prevention and control methods of leaf spot disease are relatively simple and easy. As long as we master the right methods, we can solve this problem soon. First of all, we should pay attention to the sufficient nutrition during the growth and development of Hibiscus sunflower. We should apply fertilizer in a balanced way, not greedy. Generally, if we apply fertilizer to it, we should not apply too much or only nitrogen fertilizer. Then we must ensure that the growth environment of Hibiscus sunflower has good ventilation conditions, and it is not easy to direct sunlight too much. As long as the light is sufficient, then trim it slightly if the branches of Hibiscus sunflower are too dense, because the too dense branches cause poor ventilation, which is easy to breed fungi and cause leaf spot disease. Finally, if it is found that Hibiscus sunflower has leaf spot disease, spray it with symptomatic pesticides. Generally, it can be cured by spraying it once a week for two or three times

2、 Pest control

In addition to diseases, hibiscus sunflower is often eroded by insects. Generally, the most common pest disease of Hibiscus sunflower is the invasion of beetles. If you get the insect pest disease of the beetle, the beetle will invade the leaves and flowers of Hibiscus sunflower and suck its juice, which is easy to cause wormholes on the leaves, and in serious cases, it will cause the leaves to wither and fall. The best way to deal with beetles is to use pesticides to kill beetles, so that even the young eggs of beetles can be killed. Then another way is to use Metarhizium anisopliae to kill the young eggs and larvae of beetles

It's not difficult to cure the disease of Hibiscus, but it's not difficult to be careful