Hello, I've 3 blueberry bushes all have been treated in the same way, all 3 in pots in the same part of the garden. None of them have been pruned, and all 3 in the correct compost and watered with rain water not tap water. They are all the same variety, 1 is awash with flowers and the promise of some big juicy berries again this year, but the other 2 are in leaf but showing no signs of fruit. Any suggestions. I only got them last year so not sure if it's normal or not. Thanks in advance.