photo of Lobelia siphilitica

Lobelia siphilitica

Great Blue Lobelia

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Great Blue Lobelia features purple-blue, tubular flowers, which bloom July-September in whorled clusters atop tall, erect stems. This...

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Description:

Great Blue Lobelia features purple-blue, tubular flowers, which bloom July-September in whorled clusters atop tall, erect stems. This plant’s nectar is a food source for bees and hummingbirds; it has special value for native bees and bumblebees. It prefers part-shade, but will tolerate full sun in cooler climates. Its native habitat includes swamps and moist, low areas. Use Great Blue Lobelia in the back of borders to add depth to your garden. Plant it in rain gardens, wildlife gardens, woodland gardens, and moist areas of your yard.

Plant Details:

Plant Type: Flower, Perennial

New Jersey Native: Yes

Deer Resistance: Some

Attracts Pollinators and Wildlife: Bees and Other Pollinators, Hummingbirds

Salt Tolerance: Low to None

Hardiness Zone: 6a, 6b, 7a, 7b

Physiographic Region: All Regions in NJ

Soil Characteristics

Soil Type: Loam, Organic, Clay

Soil Moisture: Medium-drained, Wet

Soil pH: Slightly Acidic, Neutral

Light Needs of Plant

Optimal Light: Partial Shade

Light Range: Full Sun, Partial Shade, Shade

Water Needs of Plant

Soil Moisture: Medium-drained, Wet

Drought Tolerance: Low

Size and Growth Rate

Height: 2 - 3 ft

Spread: 1 - 1.5 ft

Growth Rate: Medium