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Great Blue Lobelia

Lobelia siphilitica

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Category
Forb / Wildflower
Sun
Full to Partial
Soil moisture
Wet to Medium
Bloom time
Jul–Oct
Bloom color
Blue
Notes
Short-lived

About Great Blue Lobelia

Great Blue Lobelia is a dependable and beautiful perennial that brings cool, serene shades of blue to the late summer garden. Growing two to three feet tall, it produces dense spikes of tubular, two-lipped flowers that are a favorite of bumblebees, who are strong enough to push past the petals to reach the nectar. This species is highly adaptable, flourishing in full sun to partial shade and preferring moist to wet soils, though it can tolerate average garden moisture better than its red cousin, the Cardinal Flower. It is an excellent choice for rain gardens, woodland edges, or any spot that stays relatively damp. While it is a short-lived perennial, it readily self-seeds in favorable conditions, creating a charming and reliable display year after year. Its vibrant blue spikes provide a lovely contrast to the many yellow composites of the late-season prairie and are native across much of the central and eastern United States.

Native range

Native to 38 states:

AlabamaArkansasColoradoConnecticutD.C.DelawareGeorgiaIowaIllinoisIndianaKansasKentuckyLouisianaMassachusettsMarylandMaineMichiganMinnesotaMissouriMississippiNorth CarolinaNorth DakotaNebraskaNew HampshireNew JerseyNew YorkOhioOklahomaPennsylvaniaSouth CarolinaSouth DakotaTennesseeTexasVirginiaVermontWisconsinWest VirginiaWyoming

County range map

BONAP county-level native range map for Lobelia siphilitica

Range map courtesy of BONAP (Biota of North America Program).

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