For a tea pot with strainer: Add 3 tablespoons of nettle to your strainer. Then add water to your tea pot and place the strainer inside. Alternatively: Add water to a medium-sized saucepan along with the nettle.
Bring the pot of water to a boil, then reduce the heat to low and let it simmer for an hour, or until the water reduces by close to half.
Once your nettle tea is done steeping, add the rosehips to the teapot and let steep for another 3 to 5 minutes. If using a pan, strain the herbs out before serving.
Drink it hot, or let it cool to room temperature before refrigerating it or pouring it over ice. This makes at least 3 servings, so it can also be enjoyed later. You can reheat the nettle tea later if you prefer it warm.