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Plant Selector Guide
Lobelia syphilitica (Great Blue Lobelia, Blue Cardinal Flower)

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Plant Type: Perennial
Uses: Border, Rock Garden, Wildflower/Meadow, Container or Bog
Propagation: Division, Seeds
Habit: Upright
Light: Full Sun, Part Shade
Flower Color: Blue
Blooms: Summer
Width: 1 - 1.5 ft.
Height: 3 - 3.5 ft.
Fertility: Rich, Average
Soil: Neutral, Well-Drained
Zone: 5 - 8

Hardy Perennial. Beautiful blue flowers are borne on 2 to 3 foot stalks and flowers appear freely from August to September. Will self-sow so you may want to remove spent flower stalks. Great Blue Lobelia will need dividing every few years. A recommended cultivar that is superior to the species is 'Blue Peter', developed by Alan Bloom.