Nature provides trees with everything they need to thrive and be healthy. To get the same result, you need to mimic these conditions.
QUICK ANSWER: You should mulch the magnolia. To do this, use organic mulch in a layer 2 to 4 inches thick, depending on your chosen material. Mulch the magnolia in early spring and avoid volcano mulching.
Mulching is natural because all the fallen leaves create a cover that does a lot of good for the trees.
The main advantage of mulching is to prevent the soil from drying out quickly. This is especially important in magnolia because it is a moisture-loving tree, and in hot weather, the ground can dry out quite quickly.
Mulch will prevent overheating of roots in hot weather. Also, in severe frost, mulch will retain the heat near the roots, which comes from the depth of the ground.
In addition, mulch provides better aeration of the soil and prevents the emergence of weeds. Besides, organic mulch is additional nutrition for magnolia.
Read also: How to Plant and Care for Magnolia in Your Garden.
What to use as mulch?
The best mulch is organic matter. Among organic materials, some are better suited for magnolia than others.
This is primarily true of pine bark. It is a good mulching material that has a long life span and is able, among other things, to protect against weeds.
A second good material is compost. Compost can provide the magnolia with additional nutrients and reduce water loss in the heat. The main thing is choosing a good supplier offering quality products.
Next comes the pine straw. This material has one of the shortest lifespans, but it provides good air access to the soil. In addition, the aesthetic qualities of this mulch are pretty high.
How to mulch?
The best time to mulch is immediately after planting the magnolia. In this case, the tree will benefit immediately, although you can do it at any time of year.
The layer of mulch should be between 2 and 4 inches. The finer the mulch, the thinner the layer should be.
The area to be mulched should be the same as the drip line. The mulch circle should be as wide as the magnolia branches spread.
Under no circumstances should mulch material be placed on the tree trunk. A 1-2 inch gap should be between the magnolia trunk and the mulch—more on this in the next chapter.
The mulch should be renewed from time to time. In the case of pine bark, this needs to be done about every two years.
What to avoid?
The first thing to watch out for is volcano mulching. You must avoid burying the lower part of the trunk in the mulch. Otherwise, you might have problems with the tree.
To avoid this, leave free space between the trunk and the mulch. There should be at least a 1-inch gap between the trunk and the mulch.
Also, the thickness of the mulch layer should not exceed 4 inches. This is especially true for finely shredded mulch. Otherwise, the mulch will block air access to the ground surface, and mold will form.
Do not use inorganic materials for mulching magnolia. This applies primarily to shredded car tires. Worse material for mulching than this is hard to find.
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