Photosynthesis Is Cool
Grass is like photographic paper which becomes pigmented upon exposure to light. The more intense the light exposure, the more intensely pigmented the grass becomes. By exposing plots of seedling grass to light through a custom-made negative, Heather Ackroyd and Dan Harvey make the grass grow in different shades, creating unique portraits out of them.
But grass photography wasn’t invented by this duo. This technique was pioneered by photographer William Henry Fox Talbot and his photographs published in a book in 1844.