Canna 'Red King Humbert' is known for its large, bright red to reddish-orange flowers that sit atop erect, branching stalks. The blooms contrast beautifully with its lush, glossy foliage, which transitions from green to a striking reddish-bronze as the season progresses. Growing to about 5 to 6 feet tall, this variety thrives in full sun and prefers organically rich, moist, well-drained soil.