A method of storing potatoes comprises storing a plurality of endodormant or ecodormant potatoes in a first gaseous environment including carbon dioxide in an amount of from greater than the amount of carbon dioxide present in atmospheric air to up to 5 mol % based on the composition of the first gaseous environment; and in a subsequent storage step storing the potatoes in a second gaseous environment including carbon dioxide in an amount of from 0.03 to 2 mol % based on the composition of the second gaseous environment, the first and second gaseous environments having different carbon dioxide contents. The method may comprise: monitoring the dormancy of the potatoes; in response to eye movement of a potato, changing the first gaseous environment to a second gaseous environment; maintaining a level of carbon dioxide in the second gaseous environment below a selected threshold to control sugar content of the potatoes.