What to do when the leaves of gardenia turn yellow
For many girls, how to deal with the yellowing of gardenia leaves and the seven methods to make gardenia branches and leaves flourish are very good knowledge in floriculture, it is recommended to collect it!
Gardenia leaves remain green throughout the year, and they bloom in midsummer with a fresh and elegant fragrance. Many families grow gardenias in pots, but in the process of maintenance, there are always some problems, such as what to do when the leaves of gardenias turn yellow? Faced with this sudden problem, how should you solve it? Don't worry, let's find out the reasons and solutions for the yellowing of gardenia leaves.
【Solutions to the yellowing of gardenia leaves】
<1, Element deficiency causes yellowing of leaves>
Gardenia lacks iron elements, and its new leaves will turn yellow, severe cases will show yellow or white leaf veins. If deficient in magnesium, the old leaves turn yellow first, followed by the new leaves, with green leaf veins.
Solution: When iron deficiency occurs, spray 0.2%-0.5% ferrous sulfate solution for prevention and control. If magnesium deficiency occurs, spray 0.7%-0.8% boron magnesium fertilizer for prevention and control.
<2, Improper potting soil causes yellowing of leaves>
When the potting soil changes from acidic to alkaline, due to the gradual decrease of acidic nutrients in the potting soil, the leaves of gardenias show yellowing. Also, when the soil hardens and becomes not breathable and loose, it will cause the leaves to turn yellow.
Solution: Appropriately repot the gardenia or add acidic substances, such as vinegar or citric acid. After changing to acidic soil, the yellowing of leaves will improve in a short time. Also, keep the soil loose and breathable.
<3, Improper watering causes yellowing of leaves>
Too much watering will make the tender leaves of gardenias turn dark yellow and lack luster, and in severe cases, it can lead to root rot, while the old leaves are not affected. Insufficient watering, on the other hand, can cause yellowing due to long-term water shortage.
Solution: In this case, place the gardenia in a well-ventilated area, drain the water as soon as possible, and put it back after the soil dries. For insufficient watering, supplement water in a timely manner.
<4, Insufficient lighting causes yellowing of leaves>
How to deal with the yellowing of gardenia leaves
When sunlight is insufficient, you will see that the leaves of gardenias will turn yellow and even fall off. If the sunlight is too strong, such as in the hot summer, the sun-exposed part of the gardenia leaves will show yellow spots.
Solution: When sunlight is insufficient, you can move it to a sunny area to supplement sunlight. When sunlight is too strong, you can place it in a cool and well-ventilated area, waiting for the leaves to recover, so that newly grown leaves will not have yellow spots.
<5, High or low temperature causes yellowing of leaves>
When the temperature is too high in summer, the leaves will turn yellow and fall off. In winter, when the temperature is too low, gardenias are more prone to frostbite, causing yellowing of the leaves.
Solution: Gardenias prefer warm and humid conditions and are relatively cold-tolerant, with a suitable growth temperature of 18-28℃. Pay attention to the temperature in summer and can be placed in indoor ventilated shade to improve. The winter temperature should not be lower than -10℃, and more sunlight should be provided.
<6, Improper fertilization causes yellowing of leaves>
When fertilizing too much, it mainly manifests as brown tips on new leaves, thick and glossy leaf surfaces, and yellowing and falling off of old leaves. When fertilizing too little, the leaves are light yellow, with green leaf veins.
Solution: If fertilizing too much, stop fertilizing and flush the soil to reduce the concentration. If fertilizing too little, spray 0.2%-0.5% ferrous sulfate solution.
<7, Pests and diseases cause yellowing of leaves>
Spider mites mainly harm the leaves of gardenias. Spider mites feed on the leaf juice of gardenias and gather on the back of the leaves. Plants infested with spider mites have yellowing leaves and weak growth. Additionally, spider mites reproduce faster in high and dry environments.
Solution: When spider mites are found, immediately rinse with water. When the air is dry, spray water to lower the temperature and increase humidity. You can also use water soaked with tobacco leaves or cigarette butts to spray, which has a significant killing effect.
If you find that the leaves of gardenias turn yellow during the cultivation process, you should promptly look for the reasons and use your knowledge to solve the problems, allowing the leaves of gardenias to recover their vitality and grow lush and thriving. This article shares the full content of what to do when the leaves of gardenias turn yellow and the seven methods to make gardenias flourish, which green plant enthusiasts can refer to.