I have a lot of gardening books — I’m one of those people who learns how to do things from books, so the first couple of years I had this garden, I bought a lot of different things (especially if they were in the bargain bin at Borders). But there’s a very short list of books I go back to again and again: Second Nature by Michael Pollan  and This Organic Life by Joan Dye Grussow. Hugh Fearnley-Whittingstal’s River Cottage Cookbook is also probably in this category (except that every time I look at it I have such livestock-envy that…