Posted: 23/07/2014 at 16:31
Citrus are not fully hardy in the UK............you would probably want a cold G/H to overwinter them or in a conservatory maybe ? Mine spend most of the year outside in the garden but do still require protection in winter. They will take a certain amount of cold/frost when mature but the key is well drained soil.
They aren't particularly difficult but like any containerised plant, need care and maintenance.
Check out the different varieties ( there are a number these days ) and note it's characteristics and then look at some of the specialist growers/nurseries and take it from there.
I rather think tho if you are in the UK you may well find you still have to buy at least some Lemons..........annoying but true