Yep, that's it!

Now, I've been looking at weeds for many years and can say I've never seen this one -- or even heard of it. Redwhisker clammyweed, huh.

When something new pops up, I wonder whether it may become invasive. Clammyweed seems to be well behaved, though, and is popular among butterflies. I'm now wondering whether this came from one of my wife's pollinator/butterfly mixes.

Wikipedia says it's related to capers and has culinary and ceremonial uses. The way it stinks, I'll take a pass!

Thanks, guys.