Hi Sasha
Weed compete for nutrients and can attract unwanted insects to your garden.
how ever most plants that classed as weeds these day are actually good to eat or to flavor a meal.
Have a look at [url=http://www.herbsarespecial.com.au/self-sufficiency/getting-to-know-and-use-edible-weeds.html]http://www.herbsarespecial.com.au/self-sufficiency/getting-to-know-and-use-edible-weeds.html[/url] and [url=http://www.davidmcminn.com/ngc/pages/eatweeds.htm]http://www.davidmcminn.com/ngc/pages/eatweeds.htm[/url]
and no doubt much to Ann’s disgust “Cobblers’ pegs” are good for you.
Cheers
Ian