Lobelia cardinalis /Bluebell Family
This is a brilliant red flower that grows near water. It is a favorite of hummingbirds. Many Lobelia species are poisonous to humans and goats if eaten. They contain the toxins lobelamine and lobeline.
Where seen: Oak Ridge Greenways, University of Tennessee Arboretum, Frozen Head SP, Cove Lake SP, Great Smoky Mountains NP, Warriors' Path SP