Great Blue Lobelia – 1 Gallon Pot

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Great Blue Lobelia

Lobelia siphilitica

Plant Details

USDA Plant Hardiness Zones: 4a-9b Find Your Zone

Plant Type: Perennial

Height at Maturity: 3-4′

Width at Maturity: 1′
Spacing: 12″ mass plantings; 3′ or more for space between plants

Growth Habit / Form: Upright

Growth Rate: Fast

Flower Color: Blue

Flower Size: 2″

Flowering Period: Mid Summer into Fall

Flower Type: Two-lipped

Fragrant Flowers: No

Foliage Color: Green

Fragrant Foliage: No

Berries: No

Berry Color: No

Sun Needs: Part Shade (Afternoon Shade)

Water Needs: Average

Soil Type: Clay (amended), Loam, Sand (amended), Silt

Soil Moisture / Drainage: Well-drained moist to Wet

Soil pH: 6.0 – 7.0 (Moderately Acid to Slightly Alkaline)

Maintenance / Care: Low

Attracts: Visual Attention, Butterflies, Hummingbirds. Beneficial Pollinators

Resistances: Disease, Heat, Humidity, Insect, Rabbit, Wet Soil

Description

A wonderful North American native plant the butterflies will thank you for planting. The large, blue, two-lipped flowers of Great Blue Lobelia are packed onto the upper parts of sturdy stems. An easy to grow North American native plant that naturalizes freely in moisture retentive sites. Perfect for those partially shaded wet spots in the garden!

Landscape & Garden Uses

Great Blue Lobelia is perfect for planting in partially shaded sites with a moisture retentive soil, such as near ponds, streams, lakes and other sites with somewhat swampy conditions. If conditions are right the plant will naturalize freely. A fine addition to bog gardens, perennial gardens, cottage gardens, and blue theme gardens.

Growing Preferences

Lobelia isn’t too fussy about soil but grows best in a consistently moist soil of average fertility. Too much shade and flowering will be diminished. In northern regions it tolerate full sun with adequate moisture. At least 4 hours of direct sunlight per day is suggested for best flowering. Plant with the top of the root ball even with ground level. Care and maintenance are minimal. Feed in spring with an organic plant food.

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