The answer to 'sod erosion' is that it is a common problem that occurs when the soil under newly laid sod becomes washed away, causing the sod to become loose, uneven, or even completely detached from the ground. Common causes include heavy rainfall, poor drainage, and improper soil preparation prior to sod installation. Symptoms may include visible gaps, holes, or ripples in the sod.
To address sod erosion, the first step is to identify and correct the underlying cause. This may involve improving drainage, adding topsoil or compost to level the ground, and properly securing the sod with sod staples or soil nails. In some cases, re-sodding the affected area may be necessary. For more severe or widespread erosion, it's best to consult a professional landscaper who can assess the situation and recommend the appropriate solution.