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When mulch is too high and sits too close to a tree’s trunk, it causes two main issues that can slowly damage your tree over time.
Problem: Too much mulch smothers the tree’s roots. Consequence: Roots might grow up through the mulch in search of air. That can cause them to “girdle” or wrap around the trunk, which chokes the tree by cutting off its water supply. Problem: Moisture builds bushdigging.clubg: Ferris TX. Tips for placing mulch around a tree: Make sure the mulch is at least 5 inches away from the trunk of the tree and no more than 2 to 4 inches deep.
Spread the mulch around the tree into the surrounding landscape as wide as you like, tapering out to the ground level at the edge of the ring. Use fresh natural mulch such as wood chips or bark bushdigging.clubted Reading Time: 2 mins. Mulch piled up against tree trunk causes: Excess moisture to build up on tree trunk, inviting mold, mildew, insects and fungus to damage the trunk, weakening the tree and inviting decay. Stimulation of feeder roots to grow upwards through the new layers of mulch which inevitably become girdling roots, stunting the growth of the tree, choking off nutrient flow, and eventually killing bushdigging.clubg: Ferris TX.