Can You Mulch Too Much?
Posted on September 12th, 2011
September12
As beneficial as mulch is, too much can be harmful. Unfortunately, we see many landscaping efforts falling victim to overmulching. By now we have all see those “mulch volcanoes.” Mulch that has been piled up around the base of trees. Deep mulch can be effective in suppressing weeds and reducing maintenance, but it often causes additional problems.
Most organic mulches must be replenished, but the rate of decomposition varies. Some mulches, such as cypress mulch, remain for many years. Top dressing with new mulch annually (often for the sake of refreshing the color) creates a buildup to depths that can be unhealthy.
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