- 1). Dig up the soil in the garden to a depth of 1 foot. Completely remove the soil and pile it up next to the area you are excavating.
- 2). Add a 4-inch layer of fresh, not aged, wood mulch to the removed soil. Cedar or pine bark mulch is ideal.
- 3). Mix the mulch with the removed soil and then shovel it back into the excavated area.
- 4). Add an additional 2 inches of mulch to the surface of the soil. Allow it to overwinter on the soil.
- 5). Take a soil sample in the spring when the soil has thawed. Deliver or mail it to your county cooperative extension office for analysis. The nitrogen level should be significantly reduced.
- 6). You will need to repeat this process annually because the nitrogen level may increase again.
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