Bouquets imported to Europe found to be heavily contaminated, often with chemicals banned in EU and UK Bouquets imported to Europe found to be heavily contaminated, often with chemicals banned in EU and UK Stay away from roses this Valentine’s Day, environmental campaigners have warned after testing revealed them to be heavily contaminated with pesticides. Laboratory testing on bouquets in the Netherlands , Europe’s flower import hub, found roses had the highest residues of neurological and