The hare’s-tail cottongrass (Eriophorum vaginatum) is now fruiting in the swamps of the Leningrad region and St. Petersburg. This plant, also known as “bog cotton,” “cotton grass,” and “hare’s tail,” is recognizable by its soft, white, down-like hairs that develop during fruit ripening.

The plant’s specific name, “vaginatum,” refers to the sheath-like structure at the base of its leaves where they attach to the stem. Hare’s-tail cottongrass is an early bloomer, often appearing as early as the end of March.

This plant plays a vital role in the bog ecosystem. It forms hummocks that provide shelter for various animals, birds, and insects. These hummocks also aid in moisture retention and help prevent soil erosion.

In spring, elk and waterfowl, such as ducks and geese, actively feed on cottongrass. You can observe the fruiting of cottongrass in St. Petersburg at the “Sestroretskoye Boloto” reserve.