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in Problem solving
Is there any update on this? We also have it spreading across the drive and we are about to try a flamethrower on it to try and burn it off!
was so pleased to find this identified as am despairing about it, but will now try the MMC-Pro mentioned
We have same thing going on the garden paths. We just found the stuff this spring . I want to kill it now !
We had been fighting the green slime of nostoc on our gravel driveway for a number of years with no success. We tried every kind of weed killer and moss killer. We tried copper sulfate, lime, and straight bleach. We tried burning it off. We even resorted to spray paint to try to sufficate it. Nothing worked until....... baking soda. We just got bags of baking soda (bicarbonate of soda) from the local feed store and spread it on the driveway using a drop spreader. We put a heavy coat on because we have no idea of the concentration level needed. Within a week the nostoc turned brown - which from experience we know is the "dead" color. The cripsy black color is just a "waiting to be rehydrated" color. We are going to play with the concentration and see if dissolving the baking soda in water and spraying will have the same effect - but for now we are happy with the results.
Hope this helps someone else. We felt we were fighting a losing battle to the slime!
what about bleach or toilet cleaner if patches are not on gardens..
I havent been anywhere near your gravel