Bring the water to a boil.
Chop fresh rose hips or crush dried rose hips, then add to boiling water. Stir, bring back to a boil, then turn off heat.
Allow rose hips to steep in hot water for 45 minutes.
After 45 minutes, strain the resulting rose hip tea through a cheese cloth or flour sack towel lined-strainer into a large measuring cup or bowl.
Wash pot well and make sure there are no rose hips remaining. Add rose hips tea back into the pot and bring up to a boil, then turn down heat to medium and allow to simmer until reduced by half.
Once reduced, pour tea into a measuring cup and allow to cool slightly. If using honey, add it now. Mix well and allow the honey to dissolve completely. Decant syrup into a bottle and refrigerate.
Syrup should stay fresh for at least six months, but may stay fresh up to one year. (See "Recipe Notes" below for more information regarding shelf life.)