The seeds are green and very hard to spot. I put little organza bags over the spent flowers, as I was finding that the seeds dropped off the plant, probably due to their weight.
@Bandita74 , thank you for the link to your seed source. The seeds I got from Pinetree didn't result in plants with the nicely lobed leaves. The flowers were as expected, so I don't think they were mislabeled or anything. Your photos are beautiful!
I recently read a piece that said most plants in the mustard family (which nasturtiums and canary vine are, I believe) have a germination inhibitor. The advice was to scuff up the seed coat AND soak them. There was conflicting info on the soaking time. One source said 24 hours, and one said 72 hours, changing the water daily. Another suggested adding a little acid to combat that germination inhibitor, such as adding some weak coffee or tea to the soak. I may try this next time on part of them and see if it makes a difference. Of course, there was another article that advised gibberellic acid. I don't know as they're THAT hard to germinate as to justify the cost of GA!