5+ Black Truffle Cardinal Flower. Upright, bushy cardinal flower with bright red flowers and nearly black foliage that matures to a glowing maroon. Black truffle cardinal flower, scientifically known as lobelia siphilitica, is a unique and fascinating plant that is native to north america.

Hummingbirds and butterflies won’t be able to resist this native perennial. Quick to establish and vigorous. Known for it’s striking red flowers, the black truffle puts on a beautiful display of dark purple foliage as well.







