Why Are Dianthus Leaves Turning Yellow? Detailed Solutions

Dianthus is a common potted flower in daily life. Many beginners do not know how to grow it, and before long they find the Dianthus leaves turning yellow. Many people panic as soon as they see yellow leaves and do not know what to do. So what causes the leaves to turn yellow? Follow the editor to learn more.

1. Improper watering

Dianthus is a plant that likes warmth. During care, improper watering will cause its leaves to turn yellow. When watering is too little, the leaves turn yellow and fall off from bottom to top due to lack of water and drought, and in severe cases the leaf stalks droop and wilt. If watering is also excessive, the old leaves show no obvious change, but the young leaves turn pale yellow, and in severe cases the root system rots and the plant dies.

Solution: When watering Dianthus, be sure to water in the right amount. If watering is too little, it can be solved by appropriately increasing the watering frequency. For overwatering, drain the excess water in time. You can place the flowerpot on newspaper or peat so that the excess water is absorbed, or directly take the plant out of the pot and replant it.

2. Insufficient light

Dianthus is a light-loving plant. If it is grown for a long time indoors in an environment with insufficient light, its leaves will turn yellow and fall off, causing the old leaves to wither after new branches and new leaves sprout, and leaf yellowing can also cause edema disease.

Solution: Yellow leaves will absorb the reasons accumulated by the plant itself and return to normal, but this situation causes the leaves to consume far more nutrients than they produce, so it is better to simply remove the yellow leaves in time, then place it in a sunny environment for care, and then the yellow leaf phenomenon will not occur.

3. Temperature too high

When summer temperatures are high, Dianthus enters a semi-dormant state. Too high a temperature affects the root system's absorption of iron from the soil, causing high-temperature, iron-deficiency yellow leaves and white leaves in the heart leaves. When the plant is mildly deficient in iron, the mesophyll tissue is pale green and the veins remain normally green, while in severe cases the young leaves are all yellow-white, and necrotic spots appear and gradually scorch and fall off.

Solution: For this situation there is no need to worry too much. You can spray or water with chelated iron solution once a week for three consecutive weeks to return to normal. At the same time, control the temperature. You can place it in a cool, ventilated place and let the leaves slowly return to normal.

4. Not changing the pot and soil for a long time

Not changing the pot and soil for a long time will also cause Dianthus leaves to turn yellow. Generally, the pot should be changed once every two years. The pot soil is effectively the reason. As it grows, the roots in the pot become crowded and the nutrients are exhausted, and the phenomenon of tall plants, long branches, and thin yellow leaves occurs. At this time, the pot needs to be changed in time.

The above is an introduction to the causes and solutions of Dianthus leaves turning yellow. We hope it helps you. If you want to learn more related knowledge, please follow us.