Honestly speaking, we have so many plants around but we unable to know about the.. recently, I found few weeds plans in my fields which can be used as medicinal purpose but we were unaware about them....this is where knowledge alwsys play an important role....we donown few, lemon grass, ginger, basil , kint being common that we often grow at home.
Lemon grass something I always have in the garden for person use and dogs love it! Many 'weeds' used here is some form of wild spinach, African wild potato another highly sought after.