2. If you want to take root and sprout, you must ensure that the water quality is clean and change the water regularly. The number of water changes depends on the environment. If tap water must be exposed to the sun before use, it is best to use pure water. There are few nutrients in the water, so topdressing is needed in time to ensure sufficient nutrients and promote its rooting and survival faster. In addition, pay attention to the environment provided. Cold-resistant, afraid of high temperature and strong light, the water temperature is preferably around 12 degrees.

3. Ensure water quality. The water quality must be kept clean before it can take root and sprout, and the water needs to be replaced regularly. If the water quality is polluted and easy to rot, it will not only take root, but also be difficult to keep fresh. The specific number of water changes depends on the climate temperature. Change more water when the temperature is high. If the temperature is low, it will be reduced appropriately. Also pay attention to the water used, preferably pure water. If you use tap water at home, you must connect it in advance and expose it to strong light for two or three days before using it. Otherwise, the chlorine in it is too heavy, which will also hinder the germination of roots and be unfavorable to their growth.

4. Adequate nutrition. If you want to take root in water, you should also pay attention to nutrition. There are few nutrients in the water, so it is necessary to drip nutrient solution to ensure adequate nutrition. It is best to give it enough acid fertilizer, and sufficient nutrients can promote the root system to grow faster. Pay attention to fertilization after each water change. The amount of fertilization should be controlled well, and it should not be added too much at a time, so as not to burn the roots and bring fertilizer harm.

5. The environment is suitable. We should also pay attention to the environment provided when raising Buddleja in water. It has certain cold resistance and is afraid of high temperature and strong light. Even hydroponics should pay attention to the water temperature. It is best to keep the water temperature around 12 degrees and not exceed 15 degrees. Of course, it should not be too low, and it is best to keep it above 10 degrees. Usually placed in a place with weak indoor light, strong light must be blocked in time, otherwise it will be easy to get sunburned and affect growth and rooting.