Things You'll Need. Sink a papyrus plant's container in a pond or other water feature so that the container's top is up to 12 inches beneath the water surface, or grow the plant directly in boggy, wet soil near the margin of an outdoor pond.
Ham should not sit at room temperature any longer than 2 hours.
Heat the ham on low for approximately 8 to 10 hours, or until the temperature reaches 140 F for a 'fully cooked' ham or 145 F for a 'cook before eating' ham. Leftover cooked ham -- as with other leftovers -- must be reheated to a temperature of at least 165 F.