Photo credit
Agnieszka Kwiecień, Nova, CC BY-SA 3.0, Original photo
Care
- Keep the soil consistently moist, especially in full sun.
Great Blue Lobelia
Lobelia siphilitica
Listed for containers
- Flower color
- Blue
- Bloom
- July to October
- Leaves
- Deciduous
- Height
- 1.5–4 feet
- Spread
- 1–1.5 feet
- Light
- Shade to full sun
- Soil moisture
- Usually moist
Typical bloom time. A plant at the store may not be in flower.
- Containers
- Yes, listed for containersListed by Master Gardeners of Northern Virginia: Container Gardening with Native Plants (2025)
- Container size
- Not recordedMeasure your pot’s depth; we can’t confirm this pot yet.
Native to South Carolina (estimated from a regional flora)