No! It isn't Black Mold. That is easily researched through Google. I don't have any pictures and I have already destroyed it...but it will be back...because I have 'destroyed' it before.

It isn't on my 'house' but on the old garage/screened-in-room out back. It is on the wood on the side of the garage and since it is painted white it really stood out noticeably.

It grew really fast ...as it wasn't there that morning but was in the afternoon...

It looks like a big hairy black caterpillar. I poured some bleach on it but to no avail. I started to scrape it off with a stick and when I did it disintegrated into this smoke-like air-borne material. So, I scraped it off and poured bleach on the spot where it was.

Anyone have any ideas what it might be? I searched Google of course but was unable to find anything described like it or pictures of it.

With all the imports from Asian and South American counties now. These products are bringing in various molds and fungi with them some of them are bad. Seriously Joc. I would replace the wood or scrape it deep and fill in the hole with putty. The black part you see on the outside is only the spore head. It probably has microscopic root like runners in the wood.

Lapiche


edit: I have a 2 year old Dynamic Delux grandson stud colt whose dam line is Three Bars wreaking havoc in my pasture. Prepare to see me crippled...............

http://waynesword.palomar.edu/slime1.htm

Thanks for the advice Piney. Consider it as good as done!

........remember........the only thing stupider than a horse is the one who gets on the horses back....

This is actually fairly common. I have seen a few wood structes in the mendocino forest with various fungi problems. People usually just let it go. Moss will grow and you would think they designed it that way. The pressure treated lumbar seems be more resistant to this stuff.

The advice here is appropriate, to deal with things like molds and fungi. I made the mistake of conducting an experiment with an anti-esterase compound (insecticide). It did the trick, but greatly annoyed my local extension agent.

I suspected it was a colony of something like a fungi. It puffed spore-like material, but I was uncertain.

Their beef is that the public should always follow instructions, and not experiment with toxic chemicals. The accepted route is something like bleach, or a mildewcide. Or, replacing with new, or pressure treated wood.

I have noticed the EPA has removed or dumbed-down several key insecticides, which makes sense. I have to tend to some wood fence, and some studs in the garage. I'm cleaning up and repairing, and not using chemicals, this time.

Be very careful mucking about with mould, watch you don't breathe any of the powdery stuff from it in, some moulds can cause lung diseases