Growing up to 4 feet (1.2 m) tall, Lobelia siphilitica has a single ridged, unbranched stem, which is smooth or sparsely … See more

Great lobelia is found in the north from Maine to Manitoba and in the south from North Carolina to Texas. Sparse populations can be found as far west as Wyoming and Colorado.
It thrives in … See more

Lobelia siphilitica is sold in garden centers and is often grown in zones 4 to 9. It can be propagated either by cutting or seed. See more

Native Americans traditionally use Lobelia siphilitica to treat respiratory and muscle disorders. It was once considered a cure for syphilis by early European settlers, which is where the scientific name for the species originates. … See more