Tree of Heaven

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Tree-of-Heaven Isn’t “Heavenly”

If you start looking around Clackamas County, it won’t take you long to find the invasive tree-of-heaven (Ailanthus altissima). This state-listed noxious...

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Tree-of-Heaven Falls Far from the Name

hr If you start looking around Clackamas County, it won’t take you long to find the invasive tree-of-heaven (Ailanthus altissima). This state-listed...

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