A mobile device for eradicating proliferating terrestrial plants has a feeder to introduce the plants to be treated and a generator to generate electromagnetic waves for sterilizing the plants within the layer of plants. The generator can be configured to emit microwaves and/or to heat the seeds of the plants to a temperature above 60° C. The mobile device can include a hopper to receive the plants, a separator to remove metal and/or stones, and a grinder to grind the plants, which is arranged upstream from the generator.