Lobelia is a genus of flowering plants comprising 415 species, primarily in tropical to warm temperate regions, with a few species extending into cooler temperate regions. They are generally known as lobelias. Lobelia erinus is the name of the blue lobelia in our flower cursor pack, which is used for edging and window boxes. It is also known as edging lobelia, garden lobelia, or trailing lobelia. It is a low-growing, prostrate, or scrambling herbaceous plant growing to 8–15 cm tall.