No feeding right now. You WANT them to go into their dormancy for the winter months; feeding them will just wake them up...and you don’t want that! It’s a waste of product because they’re really not taking up water and nutrients at this point, anyway.
Fertilize in the spring with a basic 10-10-10 for the fruit trees, and amend the soil around your blueberry bushes with soil sulphur or aluminum sulfate (the ‘aluminum’ does NOT make its way into the berries, so don’t worry!) and then FEED them with Miracid from Miracle Grow, or the same formulation from Jack’s or another national brand designed for acid-loving plants.
The soil sulphur changes the PH of the soil ONLY; it doesn’t FEED the blueberry bush, so you need to FEED the bush too, which will produce more blooms and more juicy blueberries...a common misconception. ;)
And if those are young fruit trees, make sure you have a spiral wrap on them to keep the bunnies at bay; they love that sweet fruit tree bark in the winter! As for the blueberries, a chicken-wire cage around them, filled with leaves or straw will also keep the bunnies away from chewing on your young blueberry bushes.
I'm glad you added the name of another brand. I will buy NOTHING from Scott's/Miracle Gro