So we went for a walk in Harwich, where the ‘Secret Gardens of Harwich’ were open and in some sense ‘walkable.’   It so happens that the Nicholson horticultural bookshelf contains three books with ‘secret garden’ in the title -  The Secret Gardens of Hollywood  – but honey ALL gardens are secret in Hollywood;  The Secret Gardens of East Anglia  – several of which sometimes have open dayss, and one book simply called Secret Gardens, which contains at least one garden I’ve walked in. I know there are plenty of other ‘secret garden’ books. The weekend walk in Harwich consisted mostly of strolling from one small domestic garden to another – private rather than secret I’d have said - but it was possible to clock up a mile or two on the streets.  None of the gardens was large and some were very small, so that once inside visitors shuffled rather than walked.  It was fine, though I can’t imagine Iain Sinclair much less Baudelaire, doing thi...