[sion01]

Where should I include annual/biennial flowers and herbs in a crop rotation.Should I use them as salad crops or put them with my legumes as I don't hae a lot of these?But then sweet william is a brassica I think.I'm getting a headache.

[mumofstig]

I just bung them in wherever there is space  No headache here 

[Yorkie]

Perennial herbs are usually permanent planting, so place them in a spot which won't be affected by rotation.

Annual herbs and flowers, as MoS says, can go in anywhere.  The only caveat I would add is that those which are brassicas would probably do best in the brassica bed.