The Nature Conservation Act and invasive plants in Scotland (GB)
According to the Wildlife and Countryside Act 1981 (Schedule 9, part II) and Nature Conservation (Scotland, GB) Act 2004, it is an offence to plant or cause to grow in the wild Reynoutria japonica (Polygonaceae, EPPO List of invasive alien plants) and Heracleum mantegazzianum (Apiaceae, EPPO List of invasive alien plants).
The following plants are now added to Part II of Schedule 9 to the Wildlife and Countryside Act 1981 and are therefore similarly regulated: Cabomba caroliniana (Cabombaceae), Eichhornia crassipes (Pontederiaceae), Pistia stratiotes (Araceae), Salvinia molesta (Salviniaceae), Azolla filiculoides (Azollaceae, EPPO List of invasive alien plants), Myriophyllum aquaticum (Haloragaceae, EPPO List of invasive alien plants), Hydrocotyle ranunculoides (Apiaceae, EPPO Action List), Crassula helmsii (Crassulaceae, EPPO Alert list), Lagarosiphon major (Hydrocharitaceae, EPPO List of invasive alien plants), Robinia pseudoacacia (Fabaceae), Carpobrotus edulis (Aizoaceae), Allium paradoxum (Alliaceae), Gaultheria shallon (Ericaceae).
Sources
UK Countryside & Nature Conservation. Wildlife & Countryside Act 1981, Species Protection
Scottish Statutory Instrument 2005 No. 308. The Wildlife and Countryside Act 1981 (Variation of Schedule) (Scotland) Order 2005