Exotic plant occurrences in Wallonia is a merged occurrence-only dataset, compiling records of exotic taxa from various floristic data sources covering Wallonia (Southern Belgium). Data compilation, cleaning and validation were performed by the Département de l’Étude du Milieu Naturel et Agricole (SPW – DGARNE - DEMNA), in particular the 'GT-Flore', a working group bringing together plant experts from the department and external collaborators from regional naturalist networks. The types of primary sources compiled in this dataset are heterogeneous, including specific surveys, citizen observations, digitized collections, etc. Attention should therefore be paid to the "DC term: collectionCode" when figuring out record features. Also, 'FootprintWKT' should be used preferably for spatial referencing, as the dataset includes both grid-derived and point data. "Flore OFFH and Co" (120 000 records) is the core of the DEMNA database. It covers monitoring carried out by the department officers or by partners under ...