Lobelia

Lobelia is a diverse genus of over 400 flowering plants known for vibrant blue, purple, or white blooms, used widely as garden ornamentals (trailing or mounding) and historically medicinally, but some species contain nicotine-like compounds, making them potentially toxic and requiring caution, especially with Lobelia inflata (Indian Tobacco). They thrive in various conditions, offer beautiful color for edging, baskets, or aquatic setups (like Lobelia cardinalis), and while some varieties self-fertilize, others need careful management.