The seed is not really bad. At least I do not think that it is. It is merely misunderstood. Perhaps it would be more accurate to say that it is simply unidentified. I really do not know what it is. I do not say that very often, especially about seed that I bother to collect to sow elsewhere. I believe that it is of American bellflower, Campanula americana. If not, it is very closely related.
It appeared in part of one of the landscapes at work. Because it looked like some sort of campanula, we left it to see what it would do. It got quite tall, but never started to look like something we did not want to take a chance on. We were rewarded for taking the risk when it bloomed with these elegant spikes of small sky blue flowers. That was a little more than a year or so ago.
No one bothered to deadhead it immediately after bloom. It was only a few plants on the back edge of rather relaxed landscape, so was easy to ignore. By the time the dried floral stalks were noticed and removed, the seed had already been tossed. Consequently, there were many more of them through this last season, both in the same area, and in adjacent parts of the landscape.
In fact, there were too many to ignore when their floral spikes had finished blooming. I deadheaded them myself so that I could collect the dried floral carcasses in a small bucket. Some seed had already been tossed for next year. Nonetheless, there is enough dust-like seed in the bottom of the bucket to share with other landscapes. I intend to sow it just prior to winter storms.
So, this unidentified seed should be an asset to the landscapes.