Question
Pine root at foundatio
We bought a house with a diseased pine tree that we had removed by a tree removal company three years ago. They ground the stump and it has not grown back, but while removing other plantings we have found a very large root at the surface from the pine tree that is up against our foundation. We were wondering if there is a chemical root removal that we can place on this large root to start the decaying process as we cannot dig this root out given the location. Thank you for any advice you can give us!
AnswerYoo can treat it like it was a stunp. The organisms that rot or decay wood are called fungi. Fungi do not possess chlorophyll and consequently must derive food from other sources such as wood stumps. For fungi to live and grow, they must have the proper temperature, moisture, oxygen and food conditions. Food is supplied by the stump or wood, and oxygen is supplied by contact with the atmosphere. For optimum fungal growth, the temperature should range from 50 to 90 degrees F. The wood moisture content should be approximately 20 percent to slightly higher, but not water soaked. These optimum conditions do not exist for long periods, thus stump rotting actually occurs intermittantly and decay of the entire stump is a long-term process.
To enhance decay conditions, the stump should be cut as near ground level as possible, covered with sod and kept moist. If possible, several large holes at least 1 inch in diameter should be bored vertically into the stump. These holes expose more wood and slightly hasten decay. During the first year following tree removal, the organisms that decay the wood tend to be nitrogen-limited. That means that the addition of fertilizer during the first year, especially a high nitrogen fertilizer, will hasten decay. Be careful not to add so much as to cause a fertilizer 揵urn?to surrounding plants.
The organisms that come along to decay the stump after the first year or so tend to be carbon-limited. That means that adding high nitrogen fertilizer no longer hastens the decay. The alternative is to add carbons (in the form of sugar) to the wood after the first year. Simply add some ordinary granulated sugar through those holes and the process will speed up considerably. Keep in mind that the heartwood of some species such as cedar, mulberry, bois d抋rc and locust are naturally durable and will take much longer to decay than softer woods.
As the stump rots, depressions or holes will develop. These can be unsightly and a hazard. You can re-fill these depressions with topsoil as they develop.
There is no miracle chemical on the market that dissolves a stump overnight. Some of the more common chemicals offered for sale are potassium nitrate or saltpeter, sulphuric acid and nitric acid. Some chemicals have been ineffective.
There are several chemicals available at garden centers that will hasten the rotting of a tree stump. This basically involves drilling a series of holes in the stump and adding the chemicals. While this method definitely does speed up decomposition time, don't expect it to be lightning-fast. The stump will still take a prolonged period of time to break down.
