What causes the yellowing of gardenia leaves?
Do you know these? Here are some small experiences in green plant maintenance about why gardenia leaves turn yellow and the three reasons for yellowing leaves. Keep reading!
The "three major reasons" for gardenia leaves turning yellow, treat the symptoms to solve巧妙ly, and the leaves will be greener and shiny.
Gardenias are relatively difficult to cultivate, especially in the north, where yellowing of leaves is common. There are several types of yellowing in gardenia leaves. Today, Xiao Qi will tell you about several reasons for the yellowing of gardenia leaves.
The first situation is the most common. After we have been raising gardenias for a period of time, we will find that the veins of the new leaves are green, and other parts turn yellow. What is the reason for this? This is caused by the alkalinity of the water and soil, which leads to the soil being alkaline. The gardenias lack iron elements. In alkaline soil, iron cannot be absorbed, so the new leaves of gardenias turn yellow. If you find this situation and it is severe, it is recommended that you change the pot for them. If only a few leaves have just started to grow, you can water them with ferrous sulfate. The concentration of ferrous sulfate should be 1:1000, and it can be watered directly into the potting soil, which will allow the new leaves to recover slowly. Therefore, when raising gardenias at home, we must ensure that the soil is acidic, and water with a ferrous sulfate solution every 1-2 months to keep the soil acidic and not lack iron, so that gardenias will not have yellow leaves.
The second situation is that the veins are yellow while the rest of the leaf is green, and eventually, the entire leaf turns yellow. This situation often occurs when we have just repotted the gardenia. The main reason for this situation is root damage. When the roots do not absorb nutrients, the nutrients are supplied from the roots to the trunk and then distributed to the leaves through the veins. Therefore, without nutrient supply, the veins lack nutrients, which causes the veins to turn yellow and then spread to the surrounding leaves. This is caused by either severe root damage after repotting or a lack of fertilizer during maintenance, or too much watering and poor ventilation leading to root rot. Analyzing your maintenance situation appropriately can solve this issue effectively. If this situation occurs after repotting, you need to slow down and let it grow new roots, and this situation will be effectively relieved later.
The third situation is that the lower leaves turn yellow in a large area. The main reason for the yellowing of the lower leaves is a lack of water and fertilizer. For example, if we forget to water once and the whole plant wilts, after watering, the lower leaves will turn yellow and fall off in a large area. If we do not fertilize for a long time and the growth is relatively fast, the lower leaves will also show this situation. If there is a lack of watering or fertilizer for a long time, this situation will also occur. Therefore, to raise gardenias, ensure sufficient watering. Generally, when the soil surface is dry, water it thoroughly. Supply fertilizers regularly and quantitatively. Use multi-element fertilizers during the growing season and fertilizers with high phosphorus content during the flowering season, about 2-3 times a month, following the principle of applying thin fertilizers frequently, which will make them grow well and not have yellow leaves.
Usually, there are only these three situations for gardenia leaves turning yellow. Analyzing your maintenance method to determine which situation it belongs to can solve the problem well. When raising gardenias, try to give them more sunlight as they are sun-loving flowers. The watering principle is to water thoroughly when the soil surface is dry. The pot does not need to be too large, and the soil should be kept breathable. Regularly supplement with ferrous sulfate, and basically, there will be no problems in maintenance. Gardenias can also grow very well in your home.
The above is an introduction to the reasons for the yellowing of gardenia leaves and the detailed introduction of the three reasons for yellowing leaves. Have you understood?