I'm stickin with the premise of not not composetin' weeds that you dobn't want growin' in yer gardens... We have a problem with violets and them seeds is like the seeds from Hell. They will lay in a hot compose pile over winter and then, if used as compost, will produce hundreds of their offspring in my garen... Hey, I've been there...

Get rid of 'em is the safest and best advice... One violet will throw out hundreds of seeds...

Bobert