Heat oven to 425°F. In bowl, combine all-purpose flour, whole-wheat flour, quick oats, wheat germ, baking soda, and salt.
In small bowl, mix buttermilk with honey. Add liquid ingredients to flour mixture; stir to combine.
Turn dough out onto floured surface and shape into a circle. Place on a greased baking sheet and bake for 15 minutes.
Reduce temperature to 400°F and bake 15 minutes more or until the bread sounds hollow when you tap it. Let cool 20 minutes.