This is a native wildflower, and with these plants producing a large quanity of seeds they can be found in clusters along the roads. They are also an excellent source for pollinators and photographing butterflies and bees gathering its nectar, just like the Green Sweat Bee in the featured image.
At Chassahowitzka WMA, in my observation I see will large quanities bordering the road just before going to any wet area. Which is kind of neat having an array of purple/blue flowers guiding the way to the wetland/swampy areas. Instead of following the yellow brick road, you follow the lyreleaf sage!