Hmmm. I felt them and they felt like little bumps. If you touch the photo it enlarges so you can see it clearly. It's very evenly spaced and out of all of my marigolds these were the only ones with the white bumps. Maybe it's just a mystery lol.
They don't come off. Iam sure it's not poo 💩 lol They are the tiny bit raised and hard. I know in my life that I have seen them before but wasn't interested like I am now. They are evenly spaced. I give up. Mystery evenly spaced white things lol.