National Boss's Day is Monday, October 16th! Wish your boss a happy Boss's Day with a festive bouquet of flowers instead of just a Boss's Day card! Send them a modern bouquet, a long lasting plant or even seasonal fall flowers. Klein's Flower Shop & Greenhouse has all shapes and sizes to make someone smile this Bosses Day! Klein's Flower Shop & Greenhouse offers same day and next day flower delivery to Pittsburgh, PA and nationwide!