Bring 4 cups of water to a boil in large saucepan. Pour over tea bags. Cover and steep 5 minutes; discard tea bags. Stir in mint let stand 15 minutes.
Pour tea through a wire mash strainer into a bowl; discard mint. Bring remaining 4 1/2 cups of water and sugar to a boil in a saucepan; cool. Stir in tea and juices. Chill and serve over ice. garnish if desired.