This new guinea impatiens adds a bold pop of red to your part shade garden with its vibrant blooms. New Guinea Impatiens in the Roller Coaster series have semi-double blooms with ruffled/fringed edges, making them a unique, stand-out addition. It grows best in full shade to part shade locations in the garden and can reach a maximum size of 12 inches. Roller Coaster Red Racer is a unique twist on a timeless, classic plant.