Mulching is a great way to protect and nourish your trees, but doing it incorrectly can do more harm than good. When done right, mulch helps retain soil moisture, regulate temperature, suppress weeds, and enrich the soil as it breaks down.
Start by choosing the right mulch. Organic options like wood chips, shredded bark, or pine needles work best. These materials break down over time, adding nutrients to the soil. Avoid using plastic or rubber mulch, which can trap heat and prevent water from reaching the roots.
Next, clear the area around the tree base of grass and weeds. Then, apply a layer of mulch 2 to 4 inches thick in a donut shape around the tree. Make sure to keep the mulch about 3 to 6 inches away from the trunk. This space prevents moisture buildup at the base, which can lead to rot, pests, or disease.
Avoid piling mulch high against the trunk—known as “volcano mulching.” This common mistake can suffocate the tree and encourage rot. Instead, spread the mulch in a flat, even layer extending to the tree’s drip line if possible.
Replenish mulch once or twice a year, checking that it hasn’t compacted or thinned out. Always fluff up older mulch to improve air and water movement.
Proper mulching is a small effort that offers big returns. Done thoughtfully, it helps your trees grow strong, healthy, and resilient for years to come.
