Question:
Which weed is known as 'Congress grass'?
Which weed is known as 'Congress grass'?
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Congress grass = Parthenium; a notorious invasive weed.
Updated On: Jul 2, 2026
- Parthenium hysterophorus
- Eichhornia crassipes
- Lantana camara
- Cyperus rotundus
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The Correct Option is A
Approach Solution - 1
Parthenium hysterophorus, commonly known as Congress grass, is an invasive weed causing health issues like dermatitis and respiratory problems. It also affects crop yields by competing for nutrients and releasing allelopathic substances.
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Approach Solution -2
Common-Name Recall: This is a direct name-matching fact — 'Congress grass' is a well-known common name for one specific invasive weed.
Parthenium hysterophorus is universally known by this name in India, notorious for causing dermatitis and respiratory issues in humans besides competing with crops.
Eichhornia crassipes (water hyacinth), Lantana camara, and Cyperus rotundus (nutgrass) are all significant weeds too, but none carries the 'Congress grass' name.
Parthenium hysterophorus is universally known by this name in India, notorious for causing dermatitis and respiratory issues in humans besides competing with crops.
Eichhornia crassipes (water hyacinth), Lantana camara, and Cyperus rotundus (nutgrass) are all significant weeds too, but none carries the 'Congress grass' name.
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