Biologists have found out that if the leaf of a plant starts to get eaten it is able to give off a warning to other leaves. They do this by using similar signals to animals in distress. Biologists are continuing to study the mystery of how plants are able to take to each other. This is right. It was proven in the late 50s and written up in the press at that time!
https://www.disclose.tv/plants-actually-know-when-they-are-eaten-and-send-distress-signals-346410