(1) Specific reason: this aspect is common in the north, that is, water shortage. This plant likes water very much. If the flowers start to turn yellow, it may be that there is too little water.
(2) Solution: appropriately increase the amount of water. If it still doesn't work, you can take the following measures. Simply put, it is to soak in water for half an hour to an hour every day. Put the plants and the whole pot in a bucket, or a big pot will do. In this way, water can fully penetrate into the flower soil. Then take it out and drain it. Then put it in the shade. In addition, you can spray water on it every day. Of course, if it rains, you can take a bath for a while.
2, the light problem
(1) Specific reason: Too long illumination time will not only affect the leaves, but also make the flowers yellow.
(2) Solution: No light at all is definitely not enough, but too much is equally bad. Generally speaking, even when flowering, about two hours a day is enough. This is because this kind of plant likes shade, even if it blooms, it doesn't need much light.
3. Normal phenomenon
Sometimes, it's not our maintenance problems, but it's normal. This plant is a little different. At first, flowers are milky white, then they may turn yellow slowly and then fade. In other words, yellowing is a sign of death. Therefore, it is unnecessary to take any remedial measures.
Extended data:
Matters needing attention
1, pruning
During the growth of gardenia, the branches are easy to overlap, which is not conducive to ventilation. Therefore, it should be trimmed properly to make it grow better and promote branching. After the flowers wither, cut off the residual branches in time, which can not only preserve nutrition, but also promote the germination of new buds.
2. Pests and diseases
The main diseases of gardenia include leaf yellowing and leaf spot. Leaves turn yellow because of lack of plant nutrients. It was found that leaf spot could be sprayed with 65% zineb wettable powder for 600 times. Pests are mainly stickleback moths, scale insects and whiteflies, so you can buy pesticides and spray them.
Reference: Gardenia-Baidu Encyclopedia