What causes yellowing leaves on cyclamen?
What causes the leaves of cyclamen flowers to turn yellow? Many cyclamen lovers run into this problem. In fact, in many cases it is because we overwater and overfertilize during cultivation, which causes the edges of cyclamen leaves to turn yellow. Too much water easily leads to root rot, which causes yellow leaves. Below we summarize in detail the other causes of yellowing cyclamen leaves.
The causes of yellowing leaves on cyclamen flowers are as follows
1. Long-term nutrient depletion. If nitrogen fertilizer has not been applied for a long time, or the pot and water have not been changed, the water lacks nitrogen and other nutrients, causing weak branches and leaves, and thin, yellow leaves. You need to promptly change to fresh growing water and gradually apply more dilute, well-rotted liquid fertilizer or compound flower fertilizer.
2. Excessive fertilization. Too much fertilizer causes new leaves to become thick and fleshy, often with bumpy surfaces, while old leaves dry at the tips, turn scorched yellow and drop off. Stop fertilizing immediately, increase the amount of water changed to leach the fertilizer away, or immediately repot, rinse the bulb with water, and then replant it in the pot.
3. Hot, high temperatures. If narcissus is placed in a hot spot exposed to direct strong sunlight, the leaf tips and leaf margins of young leaves are very likely to scorch, or the leaves turn yellow and drop. Move it promptly to a well-ventilated, shady spot.
4. Too much shade. If narcissus is kept in a shady spot or a place with insufficient light for a long time, the branches and leaves will turn yellow.
5. Alkaline soil and water. Because the water lacks absorbable soluble iron and other elements, the leaves gradually turn yellow. When planting, choose acidic soil and water, and during the growing period water regularly with alum fertilizer water.
6. Poor ventilation from overcrowding. If too much nitrogen fertilizer is applied, the branches and leaves grow too luxuriantly, and with no pruning for a long time, the inner branches and leaves do not get enough light, which easily causes leaves to turn yellow and drop. Fertilize reasonably and prune more to improve ventilation and light penetration.
7. Dry air. When indoor air is too dry, narcissus often shows dry leaf tips or scorched leaf margins. Take measures such as misting and covering with a plastic film to increase air humidity,
Points to note when growing cyclamen
Some people worry that cyclamen will lack water, so when watering they not only give too much water at one time but also keep water in the saucer under the pot, which is bad for cyclamen growth. Standing water in the saucer will instead cause cyclamen root rot. At a temperature of 17°C to 18°C, watering cyclamen once every 3 days is enough, and you should wait until the soil is completely dry before watering. In addition, be careful not to spray water on cyclamen leaves and flowers.
Cyclamen likes light but also fears strong light; weak light exposure every day is enough, and do not let it bake in the sun at noon. When cyclamen flowers become paler as they bloom, it is related to insufficient light and insufficient fertilizer. It should be specially noted that most cyclamen sold in flower markets today are given professional fertilizer and watered with softened water before they go on sale, so the flowers grown this way are especially vivid. But after consumers buy them and take them home, it is very hard to grow them well. Cyclamen lovers are advised to water cyclamen with purified water or boiled water that has been left to cool for a day after buying it, and to fertilize once every half month.
Cyclamen has a habit of going dormant when summer arrives. In June, cyclamen flowers fade and the leaves turn yellow and drop. At this point you can take the tuber out of the pot and put it in a plastic bag, then place it in the refrigerator to chill, but note that the refrigerator temperature must not be below 0°C. After the Start of Autumn, take the corm out, remove the old roots and dead leaves, and replant it in a pot. When new leaves begin to sprout, gradually resume normal watering and fertilizing.