Place all caper tartar sauce into a mixing bowl and whisk together. Set aside.
Preheat broiler.
Place all crab cake ingredients into a bowl and gently fold together until everything is evenly mixed together, but do not over mix.
Melt 2 tablespoons of butter in a large skillet, over medium heat.
Drop 6 (⅓ cup sized) mounds of crab mixture into the skillet, at least 1/2 inch apart and cook for about 5 minutes or until a crust begins to form on the bottom.
Remove from heat and place in the oven, under the broiler. Broil for 2 to 3 minutes or until the crab cakes have browned on top. Repeat with remaining crab mixture.
Serve crab cakes topped with micro-greens and edible flowers, with caper tartar sauce.