Water avens is a perennial grass with soft-haired stems and big reddish flowers. Its flowers, which bloom in June and July, are its most recognisable feature. Water avens was once used to treat diarrhea, lower fever and to improve overall fitness.

Water avens grows in a variety of nutrient-rich and moist habitats, such as meadows, groves, peat forests, brooks and springs. The species is found in most parts of Europe, the Caucasus, Central Asia and North America. The species spreads when its seeds cling to animal fur, or human clothing as well.

As its name implies, Water avens lives in damp and rich places like ditches. It thrives well in manmade environments. It nourishes many species of bees which can often be seen buzzing around the plant. Water avens also attracts other insects.