Great Blue Lobelia Cardinal Flower - Lobelia siphilitica Fertilizer These varieties thrive in moist

These varieties thrive in moist

Watering: Moderate watering

Simpson's Stopper can grow to mammoth heights of 30 feet with a 20-foot spread

Bring this rare

• Zone: 8-11 if grown outdoors

Great Blue Lobelia Cardinal Flower - Lobelia siphilitica Fertilizer These varieties thrive in moistIt's great, it's blue, it's a Great Blue Lobelia! This USA native wildflower commonly beautifies stream banks, marshes, and meadows, and it attracts birds. Great Blue Lobelia is a perennial that goes dormant in the winter. It flowers from late summer to early fall. Average mature height: 1 to 3 feet Light: full sun to part shade Soil: Well drained Water: Medium to wet Zones: 4 to 8