1、 Causes of occurrence

1. The use of water is the main reason for the blackening of plant leaves. Water cannot be too much or keep it in a state of no water for a long time

2. The use of fertilizer is also very important. Raw fertilizer or too thick fertilizer cannot be used. In this way, the growth of plants will be poor after use, resulting in yellow or even black leaves

3. When encountering the stimulation of sunlight, the plant cannot be exposed to the sun for a long time, which will make the water in its body evaporate quickly, resulting in dry sharp and scorched edges

2、 Solutions

1. If the leaves have turned black, then you need to trim the diseased area, and then fill it with water. When the water overflows, it means it has been watered. The benefits of this can not only dilute the plants with excessive concentrated fertilizer, but also replenish water in time

2. Plants can be placed in a windy and unobstructed place for maintenance. In summer, it is necessary to avoid seeing the sun directly, and it can block about 50% of the sun. In addition to this season, it can gradually see the sun in other seasons, about 2 to 3 hours

3. This plant needs to add some iron elements to it. You can put an iron nail in the soil in which the plant is planted