A few years ago I bought one of the blueberry sticks you see in Poundland. It’s in a pot out the front of my house and over the past three years had grown but never shown any sign of giving fruit.
I read that blueberries do better when grown next to another blueberry plant of a different type so a few months ago I ordered a Bluecrop from Amazon and potted it up next to the other bush. I don’t know if it’s a coincidence but this year both blueberries are covered in promising-looking buds and flowers which I’m hoping will result in lots of fruit later in the year. So it might take a few years but it looks like £1 fruit bushes are worth a go.