Kenny's Perennials - Best Perennials in WNC - serving Western North Carolina since 2008.

Great Blue Lobelia

Added on by solomon house.

Great Blue Lobelia

Lobelia siphilitica

Easily grown in rich, humusy, medium to wet soils in full sun to part shade. Needs constant moisture. Will tolerate full sun in cool, northern climates, but otherwise appreciates part shade. Divide clumps in spring as needed.  

Growing Conditions

Height 24 to 36 inches
Light Requirements Full sun part shade
Bloom time July to September
Zone 4 to 9

Additional Info

May self-seed in optimum growing conditions


All info from Missouri Botanical Garden