01 - Combine water and sugar in a small saucepan. Bring to a simmer over medium heat, stirring until sugar dissolves completely. Remove from heat, stir in dried lavender, and let steep for 15 minutes to infuse floral flavor.
02 - Strain lavender from syrup using a fine-mesh sieve to remove all buds. Allow syrup to cool to room temperature before combining with lemonade base.
03 - In a large pitcher, combine freshly squeezed lemon juice, cooled lavender syrup, and cold water. Stir thoroughly until fully blended.
04 - Taste and adjust sweetness or tartness by adding more water for mildness, additional syrup for sweetness, or extra lemon juice for tartness as preferred.
05 - Add ice cubes to pitcher. Pour over ice in glasses and garnish with fresh lemon slices and lavender sprigs if desired.