Preheat your oven to 350 degrees. Grease a loaf pan and set aside.
In a large bowl, cream the butter and the sugar until light and fluffy. Add eggs, one at a time, beating well after each addition. Add the strawberries, banana, vanilla, and orange zest and stir until well-combined. In a small bowl, whisk together the flour, whole wheat flour, baking soda, salt, cinnamon, and nutmeg. Gradually add the flour mixture to the creamed butter mixture, mixing just until flour disappears.
Pour batter into prepared loaf pan and bake for 1 hour or until a toothpick inserted into the center of the bread comes out clean (mine took about 1 hour and 10 minutes). Cool on a wire rack, then remove from pan, slice, and enjoy. I especially enjoyed it the next morning, toasted up in the toaster oven with a little butter on top.