What is the cause of plant leaves wrinkling?

The wrinkles of plant leaves are caused by soil hardening and exposure. The correct planting method is as follows:

Water 1 time and 1 time every week. The basic principle of watering is: be thorough if you don't do it.

2, loosen the soil, it is best to loosen the soil properly 1-2 months, which is conducive to drainage and ventilation, so that the root system will not rot.

3. Bury (a small amount) of compound fertilizer and trace elements (minerals) in the topsoil beside the basin, so that the plants can get nutritional supplements and prevent element deficiency.

4. Go out in the morning sunshine at least twice a week 1-2 hours.