Weeds may be unwanted, but they’re more valuable than you think. Anthropologist Richard Steep says, “If I had one place to go to find medicinal plants, it wouldn’t be the forest. There are probably hundreds of weeds growing right outside people’s doors they could use.”
Stepp looked through scientific journals to find drugs that come from plants instead of being created in laboratories. He discovered that although only about 3% of the world’s quarter-million plant species are weeds, they make up more than a third of the 101 plants used to make drugs.