The answer to 'why is my mulch' is that there are several common reasons why mulch may start to look unappealing or problematic. One of the most common issues is that the mulch has simply broken down over time and needs to be replenished. As organic mulches like wood chips or bark decompose, they lose their vibrant color and start to look thin or patchy.
Another potential issue is that the mulch has become compacted, which can prevent water and air from reaching the soil properly. This can lead to problems with plant growth and soil health. Weeds may also start to grow through compacted mulch, making it look unkempt.