Forevergreen, Plantlife Long After You're Gone

Earl believes that his overspending and plant-crazed wife, Maggie will one day land him in an institution. When Maggie drains their life's savings on a new gardening supplement, odd and horrific events begin taking place. Events only Earl seems to notice. Has Maggie's collection of potted plants become the garden from hell - or has Earl come completely uprooted?