Great blue lobelia (Lobelia siphilitica)
Great blue lobelia, also known as Blue cardinal flower
The great blue lobelia (Lobelia siphilitica), once believed to treat syphilis, is a stunning wildflower known for its vivid blue blossoms. These flowers, which appear in late summer, feature segmented tubular shapes on tall, upright stems, making the plant a striking perennial in any garden.
Key Facts About Great blue lobelia
Attributes of Great blue lobelia
Lifespan
Perennial
Plant Type
Herb
Plant Height
91 cm to 1.2 m
Spread
30 cm to 45 cm
Leaf Color
Green
Flower Size
2.5 cm
Flower Color
Blue White
Scientific Classification of Great blue lobelia
Phylum
Vascular plants
Class
Dicotyledons
Order
Asters bellflowers fanflowers and allies
Family
Bellflower
Genus
Lobelias
Species
Great blue lobelia