There is a beautiful plant with green leaves and purple flowers. Don't plant it near the pond, since it will "intoxicate fish". This plant is Buddleja lindleyana, also known as lindley butterfly bush. Its Chinese name is "Zuiyu Cao", which means a grass can make fish “drunk”.

In fact, it is not a grass, but a deciduous shrub, which can reach a height of 5 meters. It blooms in summer and autumn.Fishermen often pick its flowers and leaves to anesthetize fish, so it got the Chinese name.

The lindley butterfly bush has a certain degree of toxicity, but not to poison fish to death. Itmakes fish paralyzed and powerless, like drunk. Crushing the plant and putting it into the river where the current is not fast, fish will be poisoned.There will be a phenomenon of suspended animation, and the fish belly will turn upwards. After a few hours, these fish will start to rejuvenate and swim away again.