Preheat the oven to 275ºF and line a large baking sheet (or 2, if they're smaller) with parchment paper or a silpat mat.
In a large bowl, mix together the walnuts, almonds, sunflower seeds, flaked coconut, and hemp seeds.
In a small pan on stove, stir coconut oil, almond butter, vanilla extract, orange zest, cinnamon, nutmeg and sea salt. Heat and stir until melted together
Pour the wet ingredients over the dry and stir until all the dry ingredients are coated. Spread the granola mixture into an even layer on the prepared baking sheet(s).
Bake for 50 minutes to an hour, turning the pan every 20 minutes and mixing to ensure it doesn't burn.
Remove from the oven and press down slightly to help form clusters, and then let cool completely without disturbing to help the clumps form. Store in a sealed container or bag at room temperature for about a month. (I find it best to store in the cupboard away from heat)