@janinilulu, I'm going to try and do a test this year with the calendula seeds.
I wish I could find the site that I found that said only the dark disks in the center were actual seeds. When I only planted the dark discs, I had great germination. I didn't plant the others to test though.
If I push down on most of these lighter colored ones, they just collapse. However, the lighter ones with the "bumps" on them seem to stay intact.
I remember reading something like the outer layer is a protective layer and soft and they were but it did say only he dark ones were viable seeds. Maybe a few of us could do tests
@mrsbinwy, my ligularia and shredded umbrella plant seeds are the same. I get tons of what one would think are seeds but there's no plumpness to them. There duds! Oh, and the stokesia as well. I tried growing them from traded seeds for a couple of years. I bought a pack and low and behold, I had been planting chafe. In the case of the stokesia even the ones that a a little plump don't germinate!
