It improves soil structure, fertility and aeration as it decomposes. It moderates soil temperature, protecting roots from extreme summer and winter temperatures. The soil around a tree needs to retain moisture, especially if the tree is young. Placing mulch around the tree is a key component of retaining moisture.
The sun evaporates water as it falls, especially during the heat of the day. A layer of mulch will keep the sun from touching the ground and will keep the water in place longer. Placing a mulch ring around a tree makes your landscape look great. However, mulching around a tree can put your health at risk if you do it the wrong way.
The first reason to consider mulch is that it protects the base of the tree very well, which is vulnerable in many yards. This is a great option for those who have children or for those who do a lot of their own work in the garden. Inadequate mulching, such as a mulch volcano, can be fatal to the tree because of the risk of excess moisture entering the bark of the tree trunk. According to Texas A&M University, mulch around a sapling may encourage roots to grow in mulch rather than in soil.
So, should you mulch trees? When used correctly, a layer of mulch around a tree will accelerate its growth by providing nutrients and organic material. Let's take a look at the advantages and disadvantages of placing mulch around shrubs and trees, as well as the appropriate ways to apply mulch. A thinner layer of mulch over a larger area is much better than a mulch volcano for the health and longevity of the tree. Unfortunately, many people think that having a lot of mulch is good, so they create a mulch volcano around the base of the tree instead of spreading it over the root system.