Who decided that danelions are "weeds"?  They are very pretty yellow flowers.  Some cultures make wine with them or even eat them in salads?  SO why are they weeds?  Think of all the Moms who would never have received their first bouquet of flowers from their child if it were not for dandelions.  I don't think that there are many who haven't given their Mom a dandelion out of love.  They are plentiful, free and pretty to a child.  SO where what makes them undesirable.  Go figure.