Changing climate conditions in Western Europe bring about contamination of slow-growing commodities as parsley (Petroselinum crispum) with fast-growing invasive plants. Creeping thistle (Cirsium arvense) also contaminates parsley due to its sharp thorns. Groundsel (Senecio vulgaris) is one invasive weed in the cultivation of parsley, containing pyrrolizidine alkaloids (PA). New legal requirements demand strong maximum permissible values for PA 1. Hyperspectral Imaging Techniques (HSI) have become powerful tools in determining food quality. HSI should offer the technical opportunity to differentiate between the product and its undesired weeds.