Hsbc-Grass-Artwork
Grass art – Photographic photosynthesis by Heather Ackroyd and Dan Harvey via NOTCOT.

The artists essentially use grass as a form of photographic paper, projecting a black-and-white negative image onto a patch of grass as it grows in a dark room, and using the natural photosensitive properties of the grass to reproduce photographs…

When grass gets plenty of sunlight, it produces chlorophyll and therefore turns green – but the less light it receives, the more yellow the colour is,” explains JWT art director Mark Norcutt of the process used to make the work. “Heather Ackroyd and Dan Harvey discovered that by projecting a bright black-and-white negative image onto a patch of grass as it grows (in an otherwise dark room), they can use the natural photosensitive properties of the grass to reproduce photographs. From a distance it looks like any other monochrome photograph (albeit with a slightly unusual tint); up close, it looks like perfectly ordinary grass. But even individual blades sometimes have a range of hues, as any given cell can respond to the amount of light it receives.

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Heather Ackroyd and Dan Harvey.