An additional issue to the famous newspaper "Grandmother" is dedicated to the "ubiquitous" knotweed. Knotweed (bird highlander) belongs to the Buckwheat family. It has branching stems, the length of which can reach 60 cm. In a well-developed plant, the length of the branches is generally more than 80 m. Bird highlander is unpretentious to soils. It grows by the roads, on pastures, in clogged places, near residential buildings, in stadiums. The bird highlander is not afraid of trampling and quickly grows back after repeated mowing.