Parthenium weed (Parthenium hysterophorus) is an aggressive herbaceous plant native to north-east Mexico and is endemic in America, with no economic importance reported. This invasive weed has spread to over 50 countries, including Pakistan. Parthenium is prolific, yielding thousands of small white flowers each forming five seeds and on reaching maturity results in a huge number of … Continue reading Establishing parthenium leaf beetle (Zygogramma bicolorata) at new sites in Pakistan