I had an idea what kind of plant that is, but wasn't sure so I looked it up, and as luck would have it, the first place I looked had your answer
Long lived, the willow gentian forms sturdy roots from which it sends up individual stems. Over time a tight open clump forms with stems reaching about a foot and one half in my garden. The leaves have no stalks and are in pairs from base to tip. Each leaf is about two to three inches long, ovate, with long pointed tips. As the stem extends over the season the weight of the leaves begin to pull it over beginning an arch that is completed as the flowers fill out.
In mid-July buds begin to swell in bunches of two or three along one side of the stem. The numerous flowers open end of July and beginning of August lasting well into September. Flowers are located in the junction between leaf and main stem from about the last third to tip. They are narrow tubes about one and one half to two inches in length, opening to a flare, often with stripes running the length. Inside can be blue spotted purple, the outside a deep delicious blue with the stripes often light blue or white. Flowers are so numerous they pull the stems over, touching ground at the tips. There is also a cultivar Pink Swallow with dusty tan-pink blooms and a white blooming form.
https://www.munchkinnursery.com/newslett ... af-gentian
"Gentian" in the name clued me in that it would be a gorgeous blue and it sounds wonderful. I might have to see if I can get them for my garden, too.
Post pictures of yours if you have the chance.