Lobelia (Lobelia erinus) is a tender perennial often grown as an annual in many USDA zones and is a popular choice for gardeners due to its variety of uses. Known for its beautiful sky-blue flowers, ...

The cardinal flower is a tall perennial lobelia that is native to the eastern United States and not to be confused with the low-growing, often blue annual lobelia. Its brilliant, showy red blooms ...

The color blue is pretty rare in nature, but the blue of lobelia (Lobelia erinus) is on the mark. This vibrant, low-growing annual brightens garden beds, borders, pots and even hanging baskets. It’s a ...