Intense blue flower spikes that hummingbirds and bumblebees fight over in late summer. The bolder, taller cousin of cardinal flower.
Quick Reference
- Bloom Season
- Aug to Sep
- USDA Zones
- 4-9
- Sun
- Part Shade or Part Sun
- Water
- High - consistently moist
- Mature Height
- 2-3'
- Bloom Colors
- Blue
♣ Native Species✿ Pollinator Friendly❖ Hummingbird Magnet△ Deer Resistant
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Companion plants, planting tips, FAQ, and more
About This Name
Lobelia siphilitica is the scientific name used by botanists, nurseries, and seed catalogs to identify Great Blue Lobelia unambiguously. The genus Lobelia places it within a specific plant family, and using the botanical name avoids the confusion that comes with regional common names. If you're shopping for Great Blue Lobelia, looking up plant care details, or comparing varieties, searching by Lobelia siphilitica will give you the most precise results.