Turn oven to 350°. Sift 2½ cups of flour and combine with baking powder, salt and set it aside.
Butter the Bundt pan and set it aside.
In a bowl, add blueberries and combine with 1 tsp of flour, set it aside.
In a large bowl, beat butter and sugar with electric mixer until fluffy. Add one egg at a time, then add vanilla extract, orange juice and mix well.
Add Greek yogurt, orange zest to the batter and mix well. Add dry ingredients, adding them gradually until well combined. Do not over mix the dough. Fold in blueberries.
Transfer the batter into the Bundt pan and bake for 1 hour and 10-15 minutes or until a toothpick inserted into the cake comes out clean.
Take pan out of the oven and leave cake in the pan for about 30 minutes to cool, then transfer cake on the cooling rack and let it cool completely.