What to do if the leaves of azalea turn black

1. Moisture problem

(1) Specific reason: This plant has high requirements for water. If you give too much or too little, it may cause the leaves to turn black.

(2) Solution: So, in general, watering should not be too frequent. Observe the condition of the soil surface and wait until it is dry before watering. Determining the watering interval based on this is more flexible and has better results.

2. Fertilizer problem

(1) Specific reasons: Just like water, too much or too little fertilizer may cause the leaves to turn black.

(2) Solution: There is a general principle for fertilizing, which is “apply small amounts of fertilizer frequently”. Of course, "diligent" does not mean too many times, moderate is best. The most important thing is the concentration, it must not be too high.

3. Air humidity problem

(1) Specific reasons: In addition to watering, the humidity of the air also has an impact on it. If it is too low, it will also cause its leaves to turn black.

(2) Solution: Specifically, it is better to keep it between 60 and 80 percent. We can improve it by placing a basin of water next to it, or spraying some water mist around it.

4. Lighting issues

(1) Specific reason: This plant requires a semi-shaded environment. Then, if the light is too strong, the leaves will inevitably be burned and turn black.

(2) Solution: Observe the location of the plant to see if it will be exposed to direct sunlight. If possible, then adjustments must be made in time.

5. Disease problems

(1) Specific cause: Specifically, it is "brown spot disease". When the disease first occurs, there are some small spots. Later, the entire leaf may turn black.

(2) Solution: Discard the infected leaves first. Then, spray some medicine, such as thiophanate-methyl solution.