Originally Posted By: John F
It's decomposition of organic material. I have a lot of that where I cut out an old overgrown fence row about 17 months ago that went through a wet area and the roots are now rotting underground. Stirring it up will speed decomposition and allow some aeration of the soil. Plants are not growing there because of the wetness making the soil anaerobic and "soured".


Tiller it is. Thanks.

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