The fear is related to the forest, not the plants. This feeling is very old, it goes back to Roman civilization. For the Romans, the forest was the place of the “stranger”: It was in the forest that the barbarians hid. Moreover, the French word “forêt” [forest] comes from the Latin foris, which means “outside”. In English, the word “foreign” refers to what you don’t know, that which is far away. It may be due to the ecological legacy of antiquity that the tree continues to be considered a material for trade, which is not very commendable. We have remained within this fear of the forest and the desire to sell wood.
Francis Halle, A Life drawing trees, Interview with Emmanuele Coccia