Mallow! It is actually a stomach tonic, but only if you need one. For me it is a deep rooted bother that turns up in anywhere I have cultivated once and not again. That is it finds a happy home around perennials, along the edges of the greenhouses, by water faucets, etc. The roots go to the center of the earth I think. It has geranium looking leaves and a sprawling nature. It knows I can't always get it out. When I chop it off, it tells me "I vill be bock" much like Arnold Schwarzenegger would say.