The next time you weed your garden try a few dandelion leaves in a salad. Pick young leaves and mix with different salad leaves to introduce a zingy flavour. They are packed with vitamin C, Calcium, magnesium, potassium, sodium.

Dr. Duke’s Phytochemical and Ethnobotanical Databases.

http://www.ars-grin.gov/cgi-bin/duke/farmacy2.pl

You may not want to grow this plant in your garden but the next time you come by a nettle patch why not make a tea or a delicious soup.  Wear gloves and cut the tops with a scissor.  You only need to cut the top 4-6 leaves.  Some tops may have seed heads, leave these plants to ensure next year's nettle patch.  Nettles are rich in minerals including iron, vitamin C, serotonin and calcium.  No need to worry about stinging your throat as the heat inactivate the stingers making it safe to eat.