Find more information on didymo and how to identify it at Michigan.gov/Invasives.

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 …

Ecology: Didymosphenia geminata can be found in freshwater rivers, streams and lakes. This taxon prefers cool water of low conductivity (Patrick and Reimer 1975) and may be useful as …

The Discovering Didymo Distribution project (D3) is a Canada‐USA collaboration pilot along the eastern slopes of the Rocky Mountains to determine where Didymo is located and explore …

Didymo’s native range is northern Europe but it was found in the western U.S. in 2004 and east of the Mississippi River in 2005 (see map below). Since 2007 it has been confirmed in the east …

Early Detection & Distribution Mapping System. The University of Georgia - Center for Invasive Species and Ecosystem Health. Available online at http://www.eddmaps.org/; last accessed …

Since July 2008, DNR and Baltimore County/DEPRM have been monitoring Didymo occurrence monthly in the Gunpowder Falls between Prettyboy and Loch Raven reservoirs. Below are …

Didymo (Didymosphenia geminata) is a type of invasive algae that attaches to plants, rocks, and other hard substrates in rivers and streams. Also called “rock snot” due to its slimy …

Didymosphenia geminata is a freshwater, single cell, diatom (a type of algae) which attaches itself to a solid surface such as a rock with a stalk.It is light brown, brownish yellow, or white, looking …

Maps: Didymo Locations and Survey Sites; An Inexpensive, Easy to Build Stream-side Wash Station for Cleaning Wading Boots; Statewide Occurrence and Seasonal Abundance Patterns …