I can remember eating native bilberries as a child and them having a much more intense flavour (and blue effect on the tongue) than blueberries.
I have my blue and bilberries planted ina part of the veg patch where I have dug out deep, fertile but alakline loam and rpelaced the soil with bags of ericaceous compost. Apart from having their blossom frosted at teh wrong moment, my two blueberries have enjoyed the cool wet spring and put on masses of new growth and look amazingly healthy. The two wee bilberries have done well too and almost doubled in size this season.
For winter, I shall erect a sturdier frame than last year and place a netting windbreak around them and I'll leave it in place till the frosts have passed and the fruit has set. This year the winds bent and broke the frame so I ended up removing the netting too early. We've also booked our hols for next August and not July so I'm expecting to get the best of the black and red currants and all the blueberries and strawberries. This year a lot ended up being scoffed by the birds. I always leave them some but there are limits.