Slime Molds are Interesting but Harmless Organisms

   Many area residents are observing strange life forms that appear to be some fungus. They are being found on plants, mulched beds, and soil. What are they? These are the slime molds. However, they are not molds, which are fungi. The organisms are protozoans, which include amoebas.

    Slime molds appear in the summer after rainfall events. People will see them when they form large, colorful colonies.

    In mulches, slime molds typically appear in summer after rainfall and are frequently observed when they form large, colorful colonies. They can be up to two feet in diameter but are often smaller. Its color varies. Though they may appear as parasites, they feed on decaying organic matter and pose no threat to people, plants, or pets.  When conditions are no longer favorable for them, they will dry up and disappear. They produce spores that the wind carries away.

 If their appearance of slime molds is bothersome, you can use a hose and wash them away. Rake them away or turn them under by a shovel. In some cases, they show up on turfgrasses, and mowing can remove them.

Slime molds are exciting and fascinating organisms. Enjoy their unique appearance.

Slime mold on a thyme plant.

'Dog Vomit' slime mold.

Slime mold on turfgrass