Question

What are weeds?are they useful?

Answer 1

the plants which are useless and the plants which does not have any advantages or uses with that is a weed plant. Mostly these are found in crop fields , these depend on the plants in the crop field for food and damage the quality of crops...

Hence there is no use of these weeds..

for removing these farmers use weedicides ....

hope helps dear friend

Answer 2

Weeds are unwanted plants that grow in farm during cropping season and they suck all the nutrients from the soil which are required by the crops.

They are also called farmer's foe. They aren't useful.