Great Blue, Lobelia Seed
Great Blue Lobelia Seed
- Brilliant blue flower spikes bloom from late summer into fall
- Native perennial for rain gardens and wet meadows
- Long bloom period attracts bees, butterflies, and hummingbirds
- Mature plants commonly reach 2 to 3 feet
Key Attributes
About Great Blue, Lobelia Seed
Great Blue Lobelia (Lobelia siphilitica) is a native perennial with upright spikes of brilliant blue flowers from late summer into fall. It thrives in moist soil in full sun to partial light and is well suited to rain gardens, pond edges, and wet meadows. The long-blooming flowers attract bees, butterflies, and hummingbirds. Mature plants commonly reach 2 to 3 feet tall.
Growing details
Plant profile
Seed & variety
Before Planting
Planting
Watering
Fertilizer
Harvesting
Tips
Pests & Diseases
Damping-off, leaf spots, rust, and crown or root rot can affect Lobelia. Use clean seed-starting mix, provide airflow, water at soil level, and avoid stagnant or waterlogged conditions around the crown.
Monitor Lobelia for slugs, snails, aphids, leaf miners, and spider mites. Remove pests by hand or use targeted controls first, and avoid treating open flowers while pollinators are active.
Native States & Regions
- Alabama
- Arkansas
- Colorado
- Connecticut
- Delaware
- Georgia
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Nebraska
- New Hampshire
- New Jersey
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Pennsylvania
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Vermont
- Virginia
- West Virginia
- Wisconsin
- Wyoming
Native regions: Widespread Native
Great Blue Lobelia Native Range Map
Native range describes natural occurrence, not the origin of this seed lot or every location where a plant can be grown.
Alaska and Hawaii are shown as insets. State-level range does not mean a plant occurs throughout every part of that state.
Urban Farmer
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