Lobelia siphilitica (Great Blue Lobelia) in bloom with vibrant blue flowers.
Close-up of flower buds of Lobelia siphilitica (Great Blue Lobelia) grown in LP50 size plugs.
Close-up of the dense blue flower clusters of Lobelia siphilitica (Great Blue Lobelia).
Close-up of individual flowers of Lobelia siphilitica (Great Blue Lobelia).

Lobelia siphilitica (Great Blue Lobelia) Unity Grown

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Lobelia siphilitica (Great Blue Lobelia) is a native, short-lived, colony forming perennial typically found in wet prairies, pond and creek margins, marshland borders, and other low-lying or typically moist areas. Great blue lobelia grows to between three and four feet tall, and though individual plants have very little spread, they can colonize an area over time.

With bright blue flowers that bloom from mid summer into the early fall and attract various kinds of pollinators, Lobelia siphilitica is an ideal choice for pollinator gardens, but its shade and wet soil tolerance also make it a great pick for woodland gardens, rain gardens, wetland restoration projects, and naturalized plantings in a wide variety of locations.

These specific Lobelia siphilitica were grown from seed and raised here at Unity Church Hill Nursery.

Native to Maryland, Native to U.S., and Straight Species
Mature Plant Height: Medium: 30-48"
Sun to Shade-Wide Tolerance
Soil Moisture: Wet
Soil Type: Rich Organic Matter
Bloom Time: Summer and Fall
Flower Color: Blue and White
Foliage color: Green
Features: Attracts Butterflies, Attracts Pollinators, Attracts Hummingbirds, and Fall Color
Tolerances: Black Walnut Tolerant, Clay Soil Tolerant, Deer Tolerant, Rabbit Tolerant, Flood Tolerant, Shade Tolerant, and Wet Soil Tolerant
Garden Type: Pollinator Garden, Meadow, Rain Garden, Woodland Garden, Wetland Restoration, and Small Space

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