May Flowers: Blue-eyed Mary May 3, 2009Phenology, Plants & FungiKate St. John The first time I saw Blue-eyed Mary was at Guffy Hollow near Irwin, PA. When it grows profusely – as it did there – the forest floor is carpeted in blue. It’s blooming now at Enlow Fork. Don’t miss it. (photo by Dianne Machesney)