Striking maroon leaves with deeper reddish maroon veins. Ruby Moon' is a popular variety. A white version is also available. Clings with tendrils. 10-30 feet, depending on variety and growing conditions.
All seeds have tough coats.
Before planting, soak seeds overnight in warm water to soften and speed germination. Flowers are crimson, sky blue, violet, and deep purple accented with a white pinwheel and picotee pattern. Mexican native has sprays of flowers usually in scarlet fading to yellow, then white, to give the effect of a sunset. Citronella' has lemon yellow blossoms fading to cream and pure white. I. nil 'Flying Saucers'.