I have a blueberry bush in a smallish pot. It was given to us a couple of summers ago, and we put it in the only available pot we had at the time.
This year, we've had a pretty good yield from it, considering its size. The fact that we now have a one-year-old daughter who loves blueberries means that we're thinking about putting the blueberry bush either in a larger pot, or planting it out in the border between a small apple tree and a small cherry tree.
So my question is - should we transfer it to a large pot, or put it in the soil? It's a clay soil, if that helps. If so, when is the best time to do it?