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Why Do People Paint Tree Trunks White?

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Blocking the Sun

The sun’s UV rays are hazardous to palm trees as they burn their bark and damage the cambium layers. Eventually, due to dehydration, these palm trees will die. And while adult palm trees can protect themselves from UV rays, it takes about three years before they can fully develop their bark. Thus, whitewashing is used to offer enough protection until palm trees are mature and don’t need help anymore.

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