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Why does grass make my skin itch?

By Deryn Lee Thompson, Lecturer in Nursing, University of South Australia

So, you’ve enjoyed a picnic in the sunshine. Or you’ve sat on the grass for a twilight concert. But you’ve come away with itchy and scratchy skin.

Could you have an allergy to grass? Or is something else going on?

Grass has tiny hairs

One possible reason we get a rash is the physical structure of grass itself.

Blades of grass are covered in tiny “hairs” (called trichomes), which you can view under a microscope.

These help protect the…

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