Ok, this will seem crazy but if you've gone on a mission to completely get rid of a bad weed, you know the feeling.
I've gotten most serious annual and perennial weeds out of my perennial beds and patio terraces. However, winter growing cardamine was still a serious problem.
It's tricky to control with herbicide, because if you hit it with a growth regulator after it's been flowering for a while, yes, you will kill the plant, but it only takes it a couple days to mature a few seed pods.
As you know they have those long thin pods that pop when touched...on a large plant it must spread many hundreds of seeds. You can't pull them w/o triggering the release!
I wanted to figure out a way to pick them without those damn pods exploding, which means you will have a slew next year. I always forget to pull a few before they get to seed pod size. For a while I wondered about running my vacuum cleaning while picking them! Wouldn't work, I still think some seeds would get away.
Had this bright idea: keep the pods from being able to explode at all. I had an old can of Zinsser shellac I'd bought for a project about a decade ago but hardly used. I sprayed it on a mature Cardamine plant. Came back about 3-4 hours later after the shellac had fully dried (fast outside on a warm day, obviously) picked the whole plant out of the ground and, presto...no pops! Spraying shellac on the plant doesn't seem to trigger it but I think you'd want to keep the force of the spray a few inches away.

OK...so maybe not the most environmentally sound approach, but, OTOH, NOT having to spray herbicide the following year has a benefit too. Shellac itself is relatively environmentally friendly, the solvent is ethyl alcohol and the propellent is a non-CFC hydrocarbon. Hopefully you'd only have to do this to 5-10 plants that you miss, so one can should last a while. And yes I pick them sometimes, but when you have hundreds both in lawn and in beds, it's easier just to spray them with the spring selective I used in my lawn. (have so controlled basic Broadleaved weeds like dandelion, I only need to spot treat anymore. Of course I cut it high too)