Great Blue Lobelia (Lobelia siphilitica)
Lobelia siphilitica, commonly called great lobelia or blue cardinal flower, is a Missouri native perennial which typically grows in moist to wet locations. A clump-forming perennial which features light to dark blue, tubular, 2-lipped flowers.
Easily grown in rich, humusy, medium to wet soils in full sun to part shade. Great for rain gardens! Needs constant moisture. Will tolerate full sun in cool, northern climates, but otherwise appreciates part shade. Divide clumps in spring as needed. May self-seed in optimum growing conditions, forming attractive colonies.
Height: 2.00 to 3.00 feet
Bloom Time: July to September
Sun: Full sun to part shade
Water: Medium to wet
Tolerate: Deer, Heavy Shade, Wet Soil