Reasons for Blackened Gardenia Leaves and How to Fix Them

When it comes to gardenias, everyone should be quite familiar with them. There is even a song called "Gardenia Blossoms." Gardenias look very beautiful, and people like them a lot. Gardenias are usually white and carry a fresh fragrance of their own, which makes people feel very comfortable when they smell it. But some flower lovers grow gardenias whose leaves turn black. Why is that? Let's explain the reasons below!

I. Reasons Why the Leaves Turn Black

1. Overwatering

If the problem is caused by watering too much, then you need to observe more often in daily care. We cannot see the water accumulated at the bottom of the pot just by looking at the surface, so fellow flower lovers should regularly turn over the soil to check whether the plant has root rot. If it does, that means it has been overwatered, so once you notice the leaves turning black, you must immediately check for root rot.

2. Root Damage

Roots are the most important part for a plant to absorb nutrients, so if the roots are invaded by some pathogens, the plant will be unable to absorb nutrients, and the leaves will turn black. Especially if it is overwatered at this time, the damaged roots will become infected, causing the nutrients of the whole plant to be unable to be transported, which makes the leaves turn black.

3. Pests

You should usually observe the condition of the leaves and branches more often, because pests will seriously affect the plant's growth. Once you find insect eggs on the plant, it is very likely that aphids and scale insects have damaged the leaves. If there are no insects or insect eggs, then it has come down with sooty mold.

II. Solutions for Blackened Leaves

1. First, we need to judge whether there is excessive watering. For a flower like the gardenia, you should follow the principle of not watering until the soil is dry, and when you do water, water thoroughly. Each time you water, you should also check the weather conditions and the humidity of the surrounding air. If it is a rainy day or the air humidity is relatively high, you should water a little less accordingly.

2. If pests or diseases are found, you should buy the corresponding insecticide, or mix your own insecticide to kill the pests. If you find insects or insect eggs on the spot, you can wipe them off with a wet towel or rag. If you mix your own, you can prepare it with garlic, alcohol, and soapy water.

The above are the reasons for blackened gardenia leaves and the solutions. Blackened gardenias are mainly caused by watering and pests and diseases, so careful flower lovers should observe their plants more often in daily care. Especially when root rot is the cause, you should regularly turn over the soil to check whether there is root rot.