01 - Preheat oven to 350°F (175°C). Grease and flour an 8-inch round cake pan, ensuring even coverage to prevent sticking.
02 - In a medium bowl, whisk together all-purpose flour, baking powder, and salt until well blended. Set aside.
03 - In a large mixing bowl, beat softened butter and granulated sugar together using a hand mixer or stand mixer until the mixture becomes light and fluffy, approximately 3-4 minutes.
04 - Add eggs one at a time, beating well after each addition. Mix in finely chopped culinary lavender buds and vanilla extract until evenly distributed.
05 - Gradually alternate adding the flour mixture and whole milk to the butter mixture, beginning and ending with the flour. Mix until just combined, being careful not to overmix.
06 - Pour the batter into the prepared cake pan. Use a spatula to smooth the top evenly, ensuring uniform thickness throughout.
07 - Place pan in preheated oven and bake for 25-30 minutes, or until a toothpick inserted into the center comes out clean and the top is golden.
08 - While cake bakes, combine water, sugar, and lavender buds in a small saucepan. Simmer over low heat for 3 minutes. Strain the syrup and set aside to cool slightly.
09 - Allow cake to cool in pan for 10 minutes. If using syrup, poke small holes across the surface with a toothpick and lightly brush with warm lavender syrup. Cool completely before glazing.
10 - In a small bowl, whisk together powdered sugar, fresh lemon juice, and finely chopped lavender until smooth. Drizzle evenly over the completely cooled cake. Allow glaze to set before slicing.