Question
In April of this year, we had 4 silver maple trees cut down.  Two of the four stumps are oozing a stinky orange slime that attracts flies.  I am wondering what this slime is and why only 2 stumps are affected. I am also wondering if this slime is hazardous to human and animal health.  We have 3 kids and a dog that play outside all the time.  Also right next to one of the oozing stumps is my vegetable garden and I am worried that any transfer of the slime due to rain or flies to the veggies/garden would pose a hazard to our health when eaten.  Any answers would be very helpful.

Answer
Hi Kristie,

It is quite common for freshly cut stumps to develop orange slime mold.  Although the tree tops have been removed, the roots will continue to absorb water and nutrients for some time. Two of the trees appear to still have functioning root systems and that is why these two are affected.  The fluids are coming out of the top of the stump and various microorganisms will flourish.  It is unlikely that these organisms are a health risk to your family or dog. In most cases, the organisms are protists which feed on other microorganisms and are part of the decomposition process.  I am unaware of any reports of humans or animals being harmed by slime molds.

If you don't like the slime mold, you may want to remove the stumps.  You can hire a tree care professional or rent a stump grinder.  This will allow you to grind the stump down to ground level.  You could also bury the affected stumps under soil.  

--Jen