25 May

Native to Eurasia and North Africa, it is naturalised in many parts of North America. Prefers fresh or moist places, on roadsides, along rivers, in arable land, wastelands and docklands, or on the slopes and in ditches, at an altitude of 0–2,500 m (0–8,202 ft) above sea level. It also prefers to grow in siliceous, calcareous, sandy, alluvial and clay soils