Preheat oven to 325°F degrees. Sift together the 2 ¼ cups of flour, baking soda and salt. Mix in the lemon zest and set aside.
With an electric mixer, cream together the butter and sugar until light and fluffy. Beat in the eggs one at a time, then stir in 1 tbsp lemon juice. Alternate beating in the flour mixture and the yogurt, mixing just until incorporated.
Toss the strawberries with the remaining ¼ cup of flour. Gently mix them into the batter.
Pour the batter into the Sunflower mold. Bake in the preheated oven 50-60 minutes, or until a toothpick inserted into the center of the cake comes out clean.
Allow to cool 10 minutes in the pan, then turn out onto a wire rack and cool completely. Once cooled whisk together the remaining 2 tbsp of lemon juice and the powdered sugar. Drizzle over the top of the cake.