What is the cause of the black leaves of gardenia? How to remedy the black leaves of gardenia?

Gardenia is very common in life. Many flower lovers like to plant some at home because of its fragrant aroma. But the leaves of gardenia turn black after planting. What is the matter with the black leaves of gardenia? How to remedy the black leaves of gardenia? The following editor will explain them one by one, hoping to help you.

What is the reason for the black leaves of gardenia?

1. Excessive watering causes water accumulation in the pot, which makes it impossible for the roots to breathe and causes them to be damaged, causing the leaves to turn black.

2. Leaf spot disease is caused by bacteria growing due to excessive humidity in the air and insufficient light.

3. Fertilizer damage caused by excessive fertilization.

How to remedy the blackening of gardenia leaves

First of all, when we are caring for gardenias, we all know that they need to be exposed to light, but we cannot let strong light shine all the time, especially in summer, when the temperature is high and the sun is strong, it is easy to sunburn the plants.

Secondly, we should pay attention to the amount of water when watering. The roots of gardenias are very afraid of blisters, so when watering, we should pay attention to the dryness and wetness of the potting soil. Each time we water, we should water thoroughly and not water repeatedly.

Of course, if it is a disease or pest, it will be more troublesome. This kind of black leaves may be caused by leaf spot disease. At this time, we need to spray with certain medicines and check whether there are insect eggs on the back of the leaves. Some pests will also suck the juice of the leaves, causing the leaves to turn yellow and black.

What to do if the leaves of gardenia change color

1. Improper moisture

If you water the gardenia too much, it will cause the roots to lack oxygen, and the leaves will become dull and yellow-green.

2. Lighting

If the gardenia is kept in a cool environment for a long time, the leaves will turn yellow and dull. It should be placed in a place with sufficient light. Shade is required in summer.

3. Fertilization

Too much fertilizer can cause the leaves to turn yellow, so apply thin fertilizers frequently. Lack of iron can also cause the leaves to turn pale yellow. We can spray the leaves with a ferrous sulfate solution.