What to do if the edges of the gardenia leaves turn black and wither

1. Reduce light

Reason: Although it likes light, it is afraid of strong light, such as the summer afternoon sun. If it is exposed to strong direct sunlight, the leaves will easily be burned, causing them to wither and become scorched.

Solution: Provide shade in time in summer, with a shade degree of 50%. In this season, only the morning and evening sun can be exposed. Also pay attention to it in daily life. It is best to stay in a half-sunlight environment to avoid sunburn.

2. Scientific fertilization

Reason: Normally, newly planted gardenias will not have this phenomenon. It will take a year of care for the edges to gradually turn black. This is a sign of potassium deficiency.

Solution: Pay attention to scientific fertilization during maintenance. Lack of potassium fertilizer will cause the plant to die. When potassium fertilizer is lacking, the old leaves will first turn from green to brown. Decomposed cake fertilizer should be applied, in small amounts and frequently, to ensure safety.

3. Adjust the temperature

Reason: It likes warm climate, and the best growth temperature is between 16 and 18 degrees. Too high or too low will affect its growth. Too high will burn the leaves and cause them to wilt, too low will stop growing and cause them to go dormant.

Solution: Provide more ventilation in summer, place in semi-shaded place, and avoid high temperature places. Move it indoors in winter and take precautions against the cold.