01 - Preheat oven to 350°F. Grease and flour two 8-inch round cake pans and line the bottoms with parchment paper.
02 - In a medium bowl, whisk together the all-purpose flour, baking powder, baking soda, and salt until evenly distributed.
03 - In a large mixer bowl, beat the softened butter and granulated sugar on medium speed until light and fluffy, approximately 3 minutes.
04 - Add the eggs one at a time, mixing thoroughly after each addition. Stir in the vanilla extract, fresh lemon juice, and lemon zest until well blended.
05 - Add the flour mixture in three additions, alternating with the buttermilk in two additions, beginning and ending with the flour. Mix until just combined to avoid developing excess gluten.
06 - Gently fold the well-drained mashed strawberries into the batter using a spatula, being careful not to overmix.
07 - Divide the batter evenly between the two prepared cake pans. Smooth the tops and tap the pans gently on the counter to release trapped air bubbles. Bake for 30 to 35 minutes, or until a toothpick inserted into the center comes out clean.
08 - Allow the cakes to cool in their pans for 10 minutes, then transfer them to cooling racks to cool completely before frosting.
09 - Beat the softened cream cheese and butter together until creamy and smooth. Blend in the strawberry puree, lemon juice, and lemon zest. Gradually add the sifted powdered sugar and salt, beating until the frosting is light and fluffy.
10 - Once the cake layers are completely cool, spread frosting evenly between the layers and over the top and sides. Garnish with sliced strawberries, lemon wheels, and edible flowers as desired.