Witcher, Natural monument European white elm in Komorów, Poland

The Witcher is a European white elm (Ulmus laevis) in Komorów, Lubusz Voivodeship. Its short, gnarled trunk has a vertical hollow reaching 5 m and buttress roots at the base. The crown was reduced when a long limb broke in 2005, leaving a height of about 19 m; the trunk circumference was 930 cm in 2011.

The elm was designated a natural monument in 1971. Dendrochronological dating published by Cezary Pacyniak in 1992 gave 431 years in 1984, and a 2016 study estimated about 463 years. A windstorm in 2005 broke its longest limb, and on 13 June 2020 an 18-metre limb snapped, damaging the trunk along its full height and tearing out roots on one side.

The community chose the name Witcher through a public vote, though locals also call it Mieszko to honor Poland's first ruler. This naming reflects how the place has become part of the area's identity and local pride.

A protective fence has surrounded this natural monument since 1971 to prevent damage and ensure its preservation. Visitors should respect the barrier and observe from a distance to help protect this ancient specimen.

The tree's Polish name, Wiedźmin, comes from Andrzej Sapkowski's Witcher book series and was chosen in a public poll organised by the Lubusz branch of the League for Nature Conservation. Foresters from the nearby Gubin forest district still call it Mieszko, after Poland's first ruler.