Boutonnier: How to make art with the trees. To live is to meet — someone, something, radically different from us. Trimming, like Versailles: you cut to project a shape, but here we try to let the shape grow by itself. Art arboricole means interaction, co-evolution of trajectories of life. is not to save the planet, It's to change our representation of ourselves. Pensee complex, it's the concept So, the public, the viewers, are co-substantials.