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... type_page 10 questions on biomonitoring - plants that measure air quality Biomonitoring is the use of plants to measure air quality. Plants can absorb and store substances from the air. After harvesting, these can be... 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... Heating soil successful in combating Japanese knotweed 18 februari 2020 | Japanese knotweed (Fallopia japonica) is an invasive exotic plant, whose strong roots and stems cause significant damage. Hitherto, there were no...