blueberry plant

Yes they are worth growing.  I bought mine from Lidl quite a few years ago!  I believe you need two different types for pollination purposes.  I have 4 in pots about 18" across and they provide me with about two 2 litre ice cream containers full every year although you will need to net them from the birds.  I use an old plastic greenhouse frame and covered that with netting as the plants do get quite big despite pruning every year.

that's brilliant  folks, gets me in the good books as well 
thankyou,,,,,,

A bit late to this conversation but YES, blueberries are a delight. Most of the tips have been covered already. I grow mine in large pots so I can control the acidity of the soil. As well as using ericaceous soil and rainwater I also feed with an ericacious fertilizer and mulch with pine needles. Blueberries don't want to be absolutely waterlogged but they really don't like drying out so watering in summer is important. I have found that standing the containers in large saucers helps enormously. You don't loose your precious rainwater onto the patio and you can easliy see when the saucer is dry and they need to be watered again. Enjoy!