Soursob weed is a persistent curse – but it can be beaten. Here’s how

Federica Grassi/Getty Images When you are out and about at this time of year in many parts of Australia, a cold and sometimes drab winter is relieved by a blaze of brilliant yellow: soursob. It can look pretty, but sadly it’s an introduced weed that should have nothing to do with an Australian winter. Soursob, Oxalis pes-caprae, is an introduced weed from Africa. It is also known as soursop, sourgrass and Cape sorrel, among other names. The name pes-caprae means goat’s foot and refers to the…