What is this thing growing in my driveway?

[zoomzoom]

It's only growing in the rocks (not in any grassy area).
It doesn't dry up when the hot months kick in.
I've sprayed with a water/bleach combo and weed killer. Neither does anything.
What is it and how do I get rid of it.

 

[backlash]

Alien lifeform?

 

[LadyLocust]

It's only growing in the rocks (not in any grassy area).
It doesn't dry up when the hot months kick in.
I've sprayed with a water/bleach combo and weed killer. Neither does anything.
What is it and how do I get rid of it.
View attachment 108352

Not sure what it's called, but I have a solution for you:

 

[Weedygarden]

I wonder if at some point in time, something was spilled, slime grew, and then hardened over as it dried.

 

[Pearl]

I get a lot of that, even in the dry summer, don't know what it is! Hopefully Peanut pops in soon!!

 

[Wingnut]

Looks like 'The Blob!'

 

[Pearl]

Years ago someone told me it was a type of algea!

 

[HippoTwilight]

Dump some salt on it?

 

[Haertig]

I'd go for gasoline and a match. With due caution.

 

[SoJer]

...What is it and how do I get rid of it.

..Ruth Bader Ginsburg trying to come back Up for another run on the Bench?

Jk, yeah, that's wierd - Looks like some kind of Alien Kelp / Seaweed, but.. Inland? Maybe try a stronger acid, like Muriatic (Hydrochloric) for Pools (should kill algae / molds) but Obviously, with Extreme Caution / appropriate PPEs, etc, and make Sure there are NO 'metal shavings' (Alum, etc) in those rocks, etc, but.. Just a thought..

But if That don't do it, yah.. I'm with Haertig - Kill it with Fire.

jd

 

[dademoss]

 

[thankful_k]

Are you in TX? Flamethrowers are legal in TX. Just saying.

https://throwflame.com/products/xl18-flamethrower/
It's napalm compatible. That means it's good.

 

[thankful_k]

They even have a drone:

https://throwflame.com/products/flamethrower-drone-kit/

 

[thankful_k]

George Carlin also did a pretty funny bit on them (heads up, contains profanity):

 

[Peanut]

It's "Nostoc cummune" aka Star Slime aka Star Jelly

It's a Cyanobacteria that absorbs nitrogen, from the air and other sources. Does this spot in your drive get run off from a well fertilized lawn? Or does water pool there while raining? Even temporarily?

Stop fertilizing your lawn and it'll go away. There are actually several dozen species, I don't know which one you have, don't study them.

A place to start...

https://bygl.osu.edu/node/1580

http://www.plant-lore.com/plantofthemonth/nostoc-commune/

 

[zoomzoom]

It's "Nostoc cummune" aka Star Slime aka Star Jelly

https://bygl.osu.edu/node/1580

Using the link provided, I bought Scythe. (57% pelargonic acid) BTW, this stuff isn't cheap at around $100/gallon.
Now, the hard question.
Any idea what the proper mix should be (the Scythe to water mix)?
I'm going to start a batch right now at 5% which is mid-range. At that ratio, it should kill everything but this slime by all indications is pretty tuff stuff.

 

[Snowman]

About half way down the page thru this link :

https://diggermagazine.com/the-continuing-battle-against-nasty-nostoc/

will bee measurements...!!!

 

[zoomzoom]

Excerpts from the link:
Scythe; Dow AgroSciences (pelargonic acid), 12.8 oz/gal)

Scythe (pelargonic acid) is currently labeled for use in container nurseries, so this appears to be a good option for controlling Nostoc. The 10% rate (12.8 oz./gal) is the highest labeled rate.

From me:
Thanks @Snowman!
I did see the 10% rate but didn't start there. I did a 16oz? Solo cup full for 2 gallons and hit a big patch of it. That's closer to 5%. I'll see what happens.

Quoting the link:
"It is not known if lower rates would also be effective, but even at this rate it may be cost effective because a single application did provide control for at least seven weeks"

I'm about to find out. What's disappointing is they mention 7 weeks. I want this goo gone forever!

 

[forcast]

https://www.projectnoah.org/spottings/425750094