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.
Raw pork ribs should not be allowed to sit at room temperature for  more than 20 minutes. The ribs must either be kept cold enough to  prevent the growth of bacteria or cook â¦ ed to kill any germs that are  present.