Back to profile Contact person for... - CJ (Chris) van Dijk Dossier Hogweed - How to control and remove it Giant hogweed (Heracleum mantegazzianum) can become an incredible nuisance. This plant displaces native plant varieties and the plant sap contains... Exotic species in the Netherlands Exotic species, also known as alien or introduced species, are animals, plants, fungi or micro-organisms imported through human activity into an area... Pages SWEEP Work on the development of a sustainable weed management system for pavements (SWEEP) has been conducted since 2002. Extensive field tests have shown... SWEEP - Sustainable Weed control on Pavements Weed control on pavements requires much attention. Strong weed development between paving stones has negative effects on functionality, safety and... Contact SWEEP For more information about the SWEEP system, please contact SWEEP. News Mediterranean ants successfully controlled by freezing the soil 22 december 2022 | Freezing the soil is an effective tool for controlling the Mediterranean Tapinoma nigerrimum ant species. This invasive ant is causing serious...