Gardenia can not be exposed to the sun, nor can it be completely overcast. Generally speaking, the light in autumn is not very strong. But sometimes the noon light is also very strong, so it should be covered properly. When other light is not strong, it can receive light. The light intensity should be about 60%.
What we're talking about here is the humidity in the air. It can't be less than 70 percent, or the growth of the plant will go wrong. In addition to spraying the surface of leaves, you can also spray the ground
There are many kinds of fertilizer available, as long as it is fermented. For example, bean cake, peanut butter and so on. Pay attention to the variety of fertilizer. If only nitrogen fertilizer is used, it is not easy to bloom; if there are too many phosphorus and potassium fertilizers, it will also cause the flower to fall off.
It's better in the range of 18 to 22 degrees. Autumn can generally meet the needs, if occasionally too high temperature adjustment.
Branches tend to be dense, and their nutrition is not sufficient. Generally speaking, especially after flowering, a pruning should be carried out to shorten most branches, which is conducive to later growth.
Chlorosis is easy to occur, which will affect the formation of chlorophyll. Generally speaking, it is caused by iron deficiency. Ferrous sulfate can be used to supplement, about every ten days or so.