Planting trends come and go in landscaping, just as they do in architecture, interior and clothing design. A few years ago, it was passé to include both exotic and native plants mixed together in the same garden. But today, particularly with the desire for a productive garden, many gardeners and designers are including a combination of exotic and natives and recognising the benefits of both. Another influence on planting trends is the overuse of particular plants. A plant can go out of style if it is used too much. In the early 00’s I worked in a retail plant nursery…