Lobelia cardinalis. North American, native wildflower. Spikes of scarlet flowers bloom above bright green foliage on plant with clumping habit. Good cut flower. Good in borders, mass plantings and beside water. Grows 3-4' tall by 1' wide. Blooms July to September. Full sun to part shade. Plant in rich, moist, well-drained soil. Zones 3-9.