Boil 2 cups of water in a saucepan.
Add the dried lavender buds and steep for 15 minutes.
Strain the lavender infusion into a pitcher.
In the same saucepan, combine the remaining 2 cups of water and sugar.
Heat until the sugar dissolves completely.
Remove from heat and let it cool slightly.
Add the lemon juice to the lavender infusion.
Pour the sugar syrup into the pitcher and stir well.
Refrigerate the lemonade for at least 30 minutes.
Serve over ice with lemon slices and enjoy!