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Heather Ackroyd and Dan Harvey used grass as a photographic paper by projecting a black and white image on it while growing in a dark room.

The image is projected onto the grass panels in order to achieve the affect of the finished picture. Typically, a grass panel needs a little over a week of exposure at 12 hours per day. Unfortunately, the images don’t last for too long without continued maintenance. Once exposed to natural light, the grass begins to grow more evenly and the images fade away.

Via InHabitat