Where Darkness Blooms by Andrea Hannah

Andrea Hannah's Where Darkness Blooms is a supernatural thriller about an eerie town where the sunflowers whisper secrets and the land hungers for blood.
The town of Bishop is known for exactly two things: recurring windstorms and an endless field of sunflowers that stretches farther than the eye can see. And women-missing women. So when three more women disappear one stormy night, no one in Bishop is surprised. The case is closed and their daughters are left in their dusty shared house with the shattered pieces of their lives. Until the wind kicks up a terrible secret at their mothers' much-delayed memorial.

With secrets come lies, and each of the girls is forced to confront them. After caring for the other girls, Delilah would like to move on with her boyfriend, Bennett, but every time he touches her she feels unbearable pain. Whitney has already lost both her mother and her girlfriend, Eleanor, and now her only solace is an old weathervane that seems to whisper to her. Jude, Whitney's twin sister, would rather ignore it all, but the wind kicks up her secret too: the summer fling she had with Delilah's boyfriend. And more than anything, Bo wants answers and she wants them now. Something happened to their mothers and the townsfolk know what it was. She's sure of it.

Bishop has always been a strange town. But what the girls don't know is that Bishop was founded on blood-and when it's through with them, no one might survive.