Crazytunia® Black Mamba Petunia is blanketed in stunning black trumpet-shaped flowers at the ends of the stems from mid spring to late summer. Its pointy leaves remain green in color throughout the season. A great focal point in your garden and planters; vigorous mounded plants are self-cleaning, easy to care for and have superb weather resistance. Full sun; growing up to 10″ tall and spreading up to 12″. Annual.