Congress grass, also known as Parthenium hysterophorus, is a poisonous, invasive weed that can cause health problems and harm the environment. Can be used as Bio ethanol .

 Congress grass, also known as Parthenium hysterophorus, is a poisonous, invasive weed that can cause health problems and harm the environment: 

 

Health problems: Congress grass can cause contact dermatitis, asthma, hay fever, and bronchitis. 

 

Environmental harm: It can harm local flora and fauna. 

 

Invasive species: It's a common invasive species in India, Australia, and parts of Africa. 

 

Origin: It's native to the American tropics, but was introduced to India and Australia in the 1950s. 

 

Appearance: It's an annual, herbaceous plant with leaves that resemble carrot leaves. 

 

Spread: It spreads mainly through seeds. 

 

To control congress grass, you can: 

 

Uproot: Pull out the plants before they flower, making sure to remove the entire root system. 

 

Use herbicides: Use herbicides registered for use against the weed, but always read the label and follow all instructions. 

 

Biological control: Release natural enemies of the weed, such as beetles. 

 

Maintain grass growth: Exclude grazing livestock until grass has re-established.