A high nitrogen fertilizer would be something like ammonium nitrate or urea (%). One drills down into the stump and then compacts the fertilizer into the holes.
Peterson Garden Design.
Both the stump and the fertilizer should be kept moist to speed decomposition but as others have indicated, this is not a rapid process. Jun 12, If you are looking to remove the stump before the decade is over, there are several natural methods you can use to speed up mother nature’s work.
One of those options is using Epsom salt and the other is using a nitrogen rich fertilize to naturally rot your tree stumps. Try Copper NailsEstimated Reading Time: 7 mins. Feb 05, And there's also my old-tried-and-true answer to short tree stump blues: Box off the area around the stump as if you're just building a singular raised bed, but make the height at least a foot and preferably taller.
Then fill the bed with annuals- flowers or food plants- and feed it a little more Nitrogen than you would otherwise use. The rotting stump in the center of your bed will suck up some of the Estimated Reading Time: 5 mins.