With arugula going to seed

I'm very happy to let a few of my plants go to seed. Arugula, in particular, is an easy plant from which to harvest seeds for future salads. Here's a clump of arugula blooming. I hope to gather some seeds in a few weeks. If I can remember, I try to throw out a few patches of arugula seeds every few weeks to keep arugula growing in my garden.
Family: Brassicaceae, Eruca sativa