Monster Tree by Sarah Allen

Linus used to be an artist, like his dad. Then his father died and Linus’s mom moved them to the other side of the city, hoping for a fresh start. Maybe, for the first time since losing Dad, Linus will even start drawing again. But there’s something unusual about their new neighbor Maude, and something wrong with the grotesque tree in her backyard. At night Linus sees it moving, changing, growing. When increasingly bizarre events plague the neighborhood—massive claw marks, missing pets, sightings of a red-eyed creature—he suspects Maude and her tree are to blame… Read more.