We found Annual Buttonweed in a roadside gutter in urban Rollesby. This was a rather unexpected find, as there have only been 78 previous records of this plant for the UK, and only 2 from Norfolk, for Kelling Heath Caravan Park and an urban location in North Walsham. The caravan on the driveway was a clue as to how it had become established here, having probably been transported here on the wheels from another known site: South View Caravan Park near Skegness.

Annual Buttonweed arrived in the UK as a wool alien, but made little impact upon our native habitats until it found its ideal niche, which is winter-wet, very closely mown grassland on light soils, with areas of disturbance.