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.
Tree peonies form woody bushes that range in height between 3 and seven feet tall. They should be spaced based on the expected width of the plant and placed in the garden based on the expected height. When grouping tree peonies consider matching height and growth habit above all.