Chrysanthemums may turn green for the following reasons.
1. Chrysanthemum tea may be soaked for a long time, which may lead to discoloration.
2. Maybe the temperature of water is not well mastered, so be sure not to brew with boiling water.
3. If you brew with tap water, the metal ions in the water will react with the substances in the chrysanthemum, which will turn the chrysanthemum and tea soup green. Moreover, if chrysanthemums are soaked in water for a long time, the green color will gradually deepen or even turn blue. Therefore, different water choices also have a certain impact, and the distilled water bubbles will basically not change color; Pure blisters are generally light yellow and clear, and will turn light yellow and green after a long time; Tap water and mineral water are the easiest to change color, especially when the soaked water is cooled, and then tap water or mineral water is added, it can turn green, and if it is left for a long time, it can also generate dark green. Such chrysanthemum is harmless to human body after drinking.
I hope my answer will help you! Can dispel your concerns.