He also removed his grandmother Maacah from her position as queen mother because she had made a detestable Asherah pole. Asa chopped down the pole and burned it in the Kidron Valley.
KJV
And also Maachah his mother, even her he removed from [being] queen, because she had made an idol in a grove; and Asa destroyed her idol, and burnt [it] by the brook Kidron.
ASV
And also Maacah his mother he removed from being queen, because she had made an abominable image for an Asherah; and Asa cut down her image, and burnt it at the brook Kidron.