https://southern-gardener.com/... Here is a link to an article about harvesting coleus seeds, and photos of what they look like. They are tiny tiny black round seeds. They look like a poppy seed to me. They come up very prolifically if you have certain varieties. They are like a weed in my yard. I pull gobs of them every year. I suspect that they need to be very close to the surface of the soil to germinate, if there is much soil over them they won't germinate.
