What causes mint leaves to turn yellow?

Mint is an easy-to-care-for herb that can be propagated by sowing or cuttings. This plant exudes a refreshing aroma and can not only be used to make tea and for medicinal purposes, but also has the effect of repelling mosquitoes. In the hot summer, placing a pot of mint at home is undoubtedly an excellent choice. However, many flower lovers often have the problem of yellow leaves in the mint they grow. Let’s learn why mint leaves turn yellow.

1. Sudden changes in the environment

If the soil is too wet or compacted and impermeable, it may cause root rot or insufficient absorption of water and nutrients, resulting in yellow leaves. The solution is to wait until the soil is dry before watering, and to loosen the soil moderately to improve soil permeability and drainage.

2. Improper watering

Excessive watering (water-induced yellowing) or long-term lack of water (drought-induced yellowing) can cause yellow leaves. When watering, pay attention to the dryness of the soil, use clean water or rice water, and remove yellow leaves in time.

3. Air drying

Lack of air humidity may cause leaf tips to dry out. The solution is to spray water or use a plastic film cover to increase the air humidity.

4. Insufficient light (yellow due to lack of light)

Long-term dark environment will cause excessive growth and yellow leaves. Mint should be placed in a sunny and ventilated place, and receive appropriate sunlight in the morning and evening.

5. Temperature issues

Temperatures that are too high or too low can cause yellow leaves. Pay attention to keeping warm in winter, avoid high temperatures in summer, and adjust the room temperature in time.

6. Excessive fertilization (yellow fertilizer)

The new leaves are thick and uneven, while the old leaves turn yellow and fall off. Fertilization should be stopped immediately, watering should be increased to dilute the fertilizer , and the soil should be replaced if necessary.

7. Root rot

The leaves appear longitudinally wrinkled and deformed. The solution is to cut off the rotten parts.

8. Pests and diseases

Yellow leaves can be caused by leaf spot, mosaic disease, or an insect infestation. Spray pesticides for prevention and control in time.

In short, when you are caring for mint, make sure that the mint gets enough sunlight, especially at noon. Water thoroughly until water flows out from the bottom of the pot. Use fertile, loose, breathable and water-permeable soil, such as garden soil or leaf mold, and add chicken manure fertilizer in appropriate amounts. Prune regularly to encourage growth, and loosen the soil or add new soil and fertilizer. Place mint in a well-ventilated area and avoid planting it in flower beds where it will take up space for other plants.