Gardenia potted in the north, dormant in winter. Therefore, try not to destroy the natural growth cycle of gardenia in winter and force it to grow in winter. The so-called forced growth means that gardenia potted plants enter the room prematurely. Although the room temperature is high in winter, it can no longer meet the normal requirements of plant growth. Therefore, potted plants are deformed when the temperature is not too high or too low, and they are new leaves sprouting in the environment.

The mature branches and leaves of Gardenia jasminoides Ellis can tolerate short-term low temperature of 0℃ to -3℃, but the seedlings and newly sprouted branches and leaves have poor cold resistance. The highest temperature of indoor potted gardenia in winter should not exceed 12 degrees. Once it exceeds 12 degrees, the factory is likely to have the situation described in the main problem. The minimum temperature should not be lower than 6 degrees. If the temperature is too low, the leaves of gardenia will fall off, which is also a normal growth phenomenon and will not hinder the normal germination and growth of plants in the coming year.

As for the yellow patches on the leaves, this is a symptom that the plants have yellowed. Yellowing is a disease of plants. The main symptom is that part or all of the stems and leaves turn green, leading to yellowing or yellowing. There are many reasons for the occurrence of chlorosis, and I don't have a scientific and clear answer. However, according to my years of experience in planting gardenias, most of them are due to the iron deficiency and yellowing of potted soil, and many flowers cultivated in the south, such as rhododendron, gardenia, hydrangea and jasmine, often appear. Some flower friends believe that ferrous sulfate is a panacea to prevent gardenia from yellowing. When the leaves are yellow, they are sprayed with ferrous sulfate, but spraying leaves is ineffective, and then watered with water. Results Yellowing was normal, and even the concentration of ferrous sulfate in the basin soil was too high, which led to the plant dying.

In addition to temperature, there are two other issues to be paid attention to in winter management of potted gardenias, namely light and humidity.

Gardenia should be potted and placed indoors where the sun can be seen. Even in winter, it should feel the warmth of the sun and carry out photosynthesis normally. Plants need light during dormancy, just as people need air during sleep.

Plants don't need much water during dormancy, so it's best to keep the soil slightly dry. Potted soil contains too much water, which easily leads to root rot.

Under normal circumstances, the natural growth cycle of gardenia begins in April. When spring comes and the temperature rises, gardenia begins to recover and start a new growth cycle. Soil replacement and pot replacement of potted plants need to be completed before the plants germinate.