A method for silaging harvested crops includes distributing and compacting silage consisting of shredded foliage plants in a silo. The silo is then sealed and then fermented in the silo. At least one part of the silage is flushed with an inert gas after an aerobic phase of the fermentation is detected with a first sensor. The inert gas may also be introduced into the silage if a penetration of atmospheric oxygen is detected in the silage with a second sensor.