Thanks for your help.

Yes, this appears to be blue lobelia. It likes shady locations, and can tolerate moist soils (but doesn’t require it). If left to seed, it will produce more plants around it. Otherwise, if you do not want it to seed, simply remove the old flowers before they go to seed. This is a pretty plant, and blooms in the late summer/full when many other plants are done blooming. Also a great plant for pollinators (butterflies & bees) Enjoy!

Thank you

Check out great blue lobelia (Lobelia siphilitica) and see if you have a match. Click on the link below for L. sphiltica’s information. Best wishes! http://www.wildflower.org/plants/result.php?id_plant=LOSI