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Threats to Healthy Trees

Our trees and woods face a challenging combination of pressures, from humans, pests and diseases. Below are some common threats that can be avoided.

Volcano Mulching

Volcano mulching is the mounding of mulch against the tree’s trunk. Building up soil and nutrients on top of the tree’s root zone can lead to its decline and eventual death. The tree pictured below developed roots above its original grade because of flowers and fertilizers being installed. The roots circled the tree and cut off its ability to draw up water and nutrients in the bark.

Volcano Mulching

Exposed tree roots


Construction Around Existing Trees


Plainfield Park District

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