Posted: 20/04/2013 at 19:14
...photos no. 2 and 6 have a Thuja look to them, have you bought any of these before? there is one called 'Golden Tuffet', that sometimes dies off like that...
photo 4, could be Hebe 'Emerald Green' as already stated, or perhaps one called Cupressoides 'Boughton Dome'
photo 5 I would say is Hebe 'Red Edge'. I've posted a photo of that one in my garden here, I think it's the same one...:-
very hard to tell..
as for that little conifer that appears to have lost it's lower branches, presumably it was planted originally the same level it was in the container..? if you're not happy with it, then, if it was mine, I might take a chance and plant it deeper. It'll either live or die...