In a large bowl, mix together the flours, wheat germ, baking powder and sugar.
In a small bowl or measuring cup, whisk together milk, orange juice and vanilla. Add milk mixture to flour mixture, whisking or stirring just until mixed. There may be a few lumps left, which is okay. Don't try to work all the lumps out.
Heat a skillet over medium high heat. Lightly oil skillet. Once skillet is hot, ladle the batter onto the skillet. Sprinkle frozen blueberries on top. When the bottoms of the pancakes are golden and bubbles begin to set around the edges, gently flip the pancakes. Continue cooking 2 to 3 minutes or until the pancakes are set. Serve pancakes immediately while hot.