Aspen leaf. The pattern in the leaf is caused by caterpiller larvae of the aspen leaf miner. It eats tunnels through leaf cells on the top and bottom surfaces, creating mazes that fade the leaves from their normal dark green to a silvery-white. The infestation is so pervasive that we thought this was the natural color of the leaf until informed otherwise.

Aspen leaf. The pattern in the leaf is caused by caterpiller larvae of the aspen leaf miner. It eats tunnels through leaf cells on the top and bottom surfaces, creating mazes that fade the leaves from their normal dark green to a silvery-white. The infestation is so pervasive that we thought this was the natural color of the leaf until informed otherwise.