To save my pond from choking, I raked long sheets of algae out of it and tossed them into great piles on the banks. Desperate to save their cruelly upended lives, snails and other tiny creatures wriggled in the folds of the stuff. I threw it all off into nearby bushes. But not before photographing the exquisite felting of the raw fibers.

Much later I came upon the photo of the white allium ball I’d shot earlier, and knew I had found my landscape of the week.