Even if we’re not saving seed, I like to let brassicas go to bloom so they can feed the bees during winter:

Broccoli, radishes, pak choi – let ’em bolt and bloom if you don’t need the space and you may be surprised by how many pollinators show up. The cool months are a hungry season for bees and those little bright yellow flowers are irresistible.

Incidentally, the brassica and bee photos are by my son RP Good.

RP on the right, taking the photos in this post

I think he has a good eye. He’s always out in nature, spotting something interesting. Now that he has a camera (a used Canon 30D), he is taking his creature spotting to the next level.