How do you know when to harvest borage seeds? Is there a more simple means of propagation?
You can harvest them after the flower drops off and the black seed is left. You have to be quick though because borgage self seeds readily. I find it a little hard for me to collect them off the plant because I am not quick enough. More than likely you will have plently of volunteer plants next year, like I did. You might even see the seeds already on the ground.