In environmental aesthetics a variety of proposals have been advanced about relevant norms that constrain appropriate aesthetic appreciation of nature. Some of these proposals are about cognitive or epistemic norms in that the authors claim that nature ought to be cognized in certain ways or that we ought to form certain beliefs about nature rather than others, and that when we do so, it will significantly constrain our aesthetic appreciation of nature. Another proposal is that moral norms rule out certain forms of aesthetic appreciation of natural objects and promote others. If these proposals are correct, then different kinds of value interact in the realm of environmental aesthetics. Evaluation of these proposals inevitably involves two parts. One first has to ask whether the purported norms exist. If they do, one has to assess their bearing on evaluative aesthetic judgments. Although there are weak epistemic norms of nature appreciation, they lack important implications sometimes associated with them. The situation is even less promising for moral norms: no one has successfully identified a moral norm that constrains aesthetic appreciation of nature.