Didymosphenia geminata, commonly known as didymo or rock snot, is a species of diatom that produces nuisance growths in freshwater rivers and streams with consistently cold water temperatures and low nutrient levels.
Meaning from Greek Mythology. The legend and meaning of the peony goes all the way back to Greek mythology. It is believed that the peony is named for a person of healing named Paeon who was a student of Asclepius, the god of medicine and healing.
Space the peonies about three feet (0.9 meters) apart. Plan to keep each clump of peony tubers three feet (0.9 m.) apart. They are often used in flower beds, but keep them at away from trees and bushes, as woody root systems can compete with peonies for nutrients.