Very true - it looks at the minute like the bare-bones of what is needed - I don't know if there's plans to plant it at all. They've rather boxed themselves in, actually, by having that low boundary fence all the way round, as it means they can't put anything of any height near to the enclosure edges for fear of providing an escape route. But I'm sure little cluster of shrubs around the middle should be possible - would certainly make the exhibit a bit less bleak.
