The color of jasmine changed from white to dim because the flowers faded. Its flowers can only last for a day or two. Jasmine is very clean. If the leaves get dirty water, they will fall off. So water it clean. It likes acidic soil and needs to apply a little ferrous sulfate fertilizer every once in a while. You can&;t use tap water directly. You&;d better leave the water for a few minutes before watering it. Get more sunshine. It doesn&;t bloom in the north after September. In winter, it should be put indoors for wintering, and the temperature should be kept at about ten degrees.