Search the UA catalog for books, dvds, and more. Search for journals by their title, not the article's title. It's interesting to know that urban gardening/urban agriculture has been going on for a long time. See one example, "The City Gardener," about growing food and flowers in London in 1722, as one example.
All electronic books owned by the library (and many other free resources in electronic "book" format) are cataloged and can be found by searching in our online catalog.