Part I. "The tides of the world" : Gandalfian stewardship and the foundations of Tolkien's vision -- Varda, Yavanna, and the value of creation -- Gandalf, stewardship, and tomorrow's weather -- Part II. "The succour of those years wherein we are set" : a complex ecology of agriculture, horticulture, and feraculture -- Hobbits and the agrarian society of the Shire -- Horticulture and the aesthetic of the elves -- Woods, wildness, and the feraculture of the ents -- The necessity of margins in Middle-Earth's mingled ecologies -- The ecology of Ham, Niggle's Parish, and Wootton Major -- Part III. "Uprooting the evil in the fields that we know" : following the vision, and the consequences of ignoring it -- Three faces of Mordor -- Rousing the Shire -- Environmentalism, transcendence, and action -- Conclusion : some practical matters.