01 - Combine water and sugar in a small saucepan. Bring to a simmer over medium heat, stirring constantly until sugar completely dissolves. Remove from heat and stir in dried lavender. Let steep for 15 minutes to infuse flavors.
02 - Pour the lavender mixture through a fine-mesh sieve to remove all lavender buds. Allow the strained syrup to cool to room temperature before using.
03 - In a large pitcher, combine fresh lemon juice, cooled lavender syrup, and cold water. Stir thoroughly until all components are fully incorporated.
04 - Taste the lemonade and modify sweetness or tartness by adding more water, lavender syrup, or lemon juice according to personal preference.
05 - Add ice cubes to the pitcher. Pour over glasses filled with ice and garnish with fresh lemon slices and lavender sprigs if desired.