👉 Knitweed is a type of wild grass that grows on rocks and other surfaces in England, Wales, and Scotland. It is often called "carnation grass" because it resembles the flowers of carnations. Knitweeds are typically found near water bodies such as rivers, lakes, or streams, and they can grow up to 3 feet tall. They have a distinctive, wiry appearance with dark green leaves that are covered in thorns and spines. Knitweeds
