Alliums are spectacular plants, so it’s worth saving a few seeds to sow in spring to grow more for the garden.
Seeds from cultivars won’t be true to type, but it’s fun to grow them anyway and see what you get. The seeds will germinate quickly and reach flowering size in a couple of years. When planting out, choose a sheltered, sunny spot with sharp drainage to get the best display.
If you want to keep the seedheads in the garden for winter interest, try tapping the seeds directly into a paper bag. You could also re-use the cut seedheads in indoor displays.