Discussion in 'Tree and Shrubs' started by Rahab222, Feb 20, 2017.
If you don't want to have someone grind it out or spend a lot of energy digging and hacking at it I only know of two other methods.
1) potassium nitrate - drill several large holes in it and pour that in. After a few weeks it will have mostly rotted out.
2) burn it out - drill several holes, soak with lighter fluid or similar, light it.
I guess you could also try inoculating it with a fungus like oyster mushrooms or shiitaki mushrooms but this may take longer than you want. Again drill some holes and tap in the dowel plugs.
The big problem with letting it rot away is a hole will keep appearing and need back filling as the wood rots out from under the soil level.