What if the leaves of gardenia turn black and dry?

First, too much watering

This is the most likely reason. Although this kind of flower usually likes the wetter growth conditions, everything goes too far. Once the water content in the flower soil is too high, it is likely to cause its roots to soak in the water, which will not only make the roots unable to absorb nutrients from the flower soil, but also in the long run. The root system will also be soaked. Once there is a problem with the root, the nutrient supply of the whole plant cannot be guaranteed, and the leaves will be listless, black and dry.

Solution: this depends on the specific conditions of the plant. If the leaves of the plant are just beginning to have problems, and the disease is relatively mild, we need to put it in a cool and ventilated place to dry the flower soil, and then reduce the frequency of rehydration; if many leaves of the plant have problems, then we need to remove the whole plant from the flower soil, then carefully cut out the rotten roots, spray and sterilize them, and then plant it into the new flower soil.

2. Frostbite

This situation mainly happens in winter, and many flower lovers may be careless and do not prepare some measures to protect it from the cold before winter comes, resulting in it being frozen, its roots frozen and unable to draw nutrients from the flower soil, thus causing the leaves to dry and blacken.

Solution: this also needs to take corresponding measures according to the situation of the plant. If it is only mild frostbite, then we can cut off the frozen branches and leaves and put them in a warmer place to help it recover; if the freezing is serious, we need to take it out of the flower soil and cut off the frozen roots. then cut off all the branches and leaves, leaving only one or two healthier branches, and then replant them in a pot and put them in a warm place to take good care of them.

III. Diseases and insect pests

Once it is eaten by some pests or germs, it will have the same problem as above.

Solution: at this time, we need to determine what disease or worm it has, and then buy the appropriate medicine to spray according to the instructions.