When you think of 74-year-old British gardener and broadcaster Alan Titchmarsh, who helms the wholesome ITV gardening show Love Your Garden, censorship is probably not the first word that springs to mind. Still, that hasn’t deterred North Korea’s state television Central TV, which has censored a 2010 episode of the BBC gardening programme Alan Titchmarsh’s Garden Secrets (which does sound a bit filthy, come to think of it). The reason? His jeans. They blurred out presenter Titchmarsh’s trousers, as jeans are seen as a symbol of western imperialism in the secretive state – and are therefore ban…