A method for preserving tubers, preferably potatoes, wherein tubers are placed in a package and said package is at least partially filled with a gas, characterized in that the packaged tubers are subjected to a heat treatment such that at least substantially the entire interior of the packaged tubers has a temperature of 25 - 75 °C, preferably 40 - 60 °C, more in particular approximately 50 °C when large tubers are concerned, and that at least substantially the entire interior of the packaged tubers has a temperature of 45 - 85 °C, preferably 60 - 80 °C, in particular approximately 70 °C when small tubers or parts of tubers are concerned.