Preheat your oven to 350°F (175°C) and prepare a 9x5-inch loaf pan.

Whisk together the all-purpose flour and baking powder in a bowl.

Rub granulated sugar with lemon zest and culinary lavender in a large bowl.

Cream together the butter and lavender sugar mixture for 2-3 minutes.

Incorporate the eggs one at a time, mixing in the lemon juice.

Gradually mix in dry ingredients and milk alternately until just combined.

Pour batter into the prepared pan and bake for 50-60 minutes.

Cool the cake in the pan for 15 minutes before transferring to a wire rack.

Whisk powdered sugar, milk, lavender extract, and food coloring to make the glaze.

Drizzle the lavender glaze over the cooled cake and serve.