Owning a farm was a no-brainer for Carrie Underwood , who grew up on one in Checotah, Oklahoma .

A self-described green thumb, the country star, 42, lives on 400 acres with her husband, former NFL player Mike Fisher , and their two young sons in Tennessee, RadarOnline.com can reveal.

But a source said the constant grind of farm life is beginning to wear on the Before He Cheats singer. Article continues below advertisement

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"It's become too much for her to maintain, and she's getting no sleep because she's up at the crack of dawn taking care of all these animals," said the insider of the chickens, horses, and sheep on the property, which also includes fruit trees, a greenhous

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