This invention is a new and distinct variety of sweet cherry tree denominated ‘IFG Cher-six’. The new sweet cherry tree ‘IFG Cher-six’ is characterized by producing large size blushed fruits having a reniform shape. The ‘IFG Cher-six’ has medium firm, medium acid fruit with a good eating quality ripening in mid-season. Fruits are moderately tolerant of rain induced cracking. The tree has a medium-low chilling requirement, produces few doubled and spurred fruits and ripens seven to ten days before the ‘Rainier’ variety.