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.
Eggs can only be kept at room temp for at most 4-6 hours (i.e. Picnic, hors d'oeurves, etc) and the left-overs must be thrown away.