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“Dog Vomit Fungus”-Slime Mold

In spring, when you have cleaned the yard of all its winter debris and laid down new hardwood mulch on all of your beds.  Some time has passed and as you walk around enjoying your season-ready yard, you notice something sitting on top of your mulch!  It is not very big, but it is very ugly, and quite frankly, it looks like your dog has puked up something that didn’t quite agree with him.  What you are looking at is called, in gardening circles, Dog Vomit Fungus (slime mold).  No really, that’s what it is called and it is more common that you’d think!  Typically, spring weather conditions are perfect for this nasty looking fungus to appear in your mulched landscape beds.

Why is it showing up in JULY?  Lately, the weather has been very similar to our spring time conditions, cool and damp.

We have been getting calls reporting a strange slimy mess in landscape beds- almost like someone threw up in their gardens!!!  It is a type of mushroom?  Is it going to harm my shrubs or other landscape plant material?

Let me ease your concerns…

This isn’t a mushroom at all. It is a mold- a slime mold! It is actually more closely related to a single-celled organism.  Slime mold has 2 life stages; First, “plasmodium” stage- it is just like a huge amoeba that creeps and moves like a blob over dead wood (including mulch) and other materials, engulfing,...