Why Are ZZ Plant Leaves Turning Black? Latest Cause Analysis
The ZZ plant is a very common ornamental plant in our daily lives, and its planting area in our country is very extensive. The ornamental value of the ZZ plant is very high, so it is also welcomed by many people. However, when growing ZZ plants, the phenomenon of ZZ plant leaves turning black often occurs, so what is going on with ZZ plant leaves turning black? Below, the editor will give you a brief introduction, let's take a look!
1. Overwatering
The leaves of the ZZ plant are very thick and fleshy, with a relatively high water content, and the underground stems of the ZZ plant are also very rich in water, so its drought tolerance is very strong. Therefore, when caring for a ZZ plant, we should be careful not to water it too much, and watering should not be too frequent. Over a long period, the soil easily becomes waterlogged, which obstructs root respiration and leads to the phenomenon of leaves turning black. At this time, watering should be stopped immediately, and then ventilation should be provided right away to let the moisture dry out. After the plant gradually recovers, reduce the frequency of watering, taking "water when dry, stop when wet" as the watering principle.
2. Excessive Light
The ZZ plant is actually a plant that likes to grow in an environment with sufficient light. But even so, its tolerance to strong light is relatively poor. The ZZ plant must never be left in the sun for a long time; over time, this will hinder the ZZ plant's metabolism, and the leaves will gradually turn yellow and black. This is especially true in summer, when the light is stronger. If the leaves turn yellow due to excessive light, then promptly cut off the black and yellow leaves, and then move it to a place with soft light for care. In summer, be sure to do a good job of shading, and do not let it be exposed to the sun.
3. Unsuitable Temperature
The ZZ plant likes to grow in a warm environment, and its tolerance to high temperatures is also relatively strong, but it is not cold-tolerant. Therefore, in winter, we must be sure to do a good job of cold protection and heat preservation. If the temperature is not well controlled in a low-temperature environment in winter, then the ZZ plant is very prone to frost damage. After frost damage, yellow and black leaves will appear. Therefore, in winter, we should move the plant indoors. The temperature should be kept at least above 10 degrees to avoid frost damage, ensure that the ZZ plant can overwinter safely and grow normally, and reduce the phenomenon of leaves turning black.
4. Causes of Pests and Diseases
Pests and diseases are also a main cause of ZZ plant leaves turning black. When cultivating ZZ plants, if the environment is unsuitable, then the plant is very prone to infection by pests and diseases, and the main targets of harm for many pests and diseases are the leaves. After the leaves are damaged, the phenomenon of turning black will naturally appear. For leaves that have turned black due to pests and diseases, we should promptly cut them off to prevent the condition from spreading. Then apply the appropriate treatment according to the specific pests and diseases; if it is a soil infection, then promptly replace the soil with new soil.
The above is a brief introduction to what is going on with ZZ plant leaves turning black. That's all for today's introduction; this article is for reference only, and we hope it can help everyone!