Pour equal parts water and sugar in a saucepan. Heat to just before boiling.
Remove from heat as soon as it begins to boil. Add lavender flowers and Earl Grey tea leaves.
Infuse 10 minutes or until cooled.
Strain the syrup into a pitcher.
Pour the lemon juice into a serving pitcher. Add the water and the simple syrup. Stir.
Pour into serving glass. Garnish with a few lemon slices and this incredibly refreshing beverage is ready to go.