The terminology "black flowers" is used loosely to refer to the darkest blooms available to growers. If you look closely, you'll usually see that "black flowers" are such a deep purple that they just appear black. I show pictures of black flowers, as well as an example of a plant with dark foliage, in this photo gallery.
- Purple Morning Glory: Almost Black FlowersPurple morning glory vine picture.
- Dark Coleus PhotoImage of Coleus with dark leaves.
- Dark Foliage of AjugaPhoto showing dark foliage of an ajuga plant.
- Edens Magic Giant Bergenia PhotoPhoto of Edens Magic Giant bergenia.
- Picture of Sand CherryPicture of purple leaf sand cherry's dark foliage.
- Shrubs With Dark Foliage: SmokebushSmoke bush's foliage is dark enough to serve as a nice backdrop for brightly colored flowers.