Tree of Heaven Removal
Ailanthus altissima is one of the most aggressive invasive trees in North America — and it's spreading across the Inland Northwest. This is Inland Commons Fund's first sponsored project: helping landowners identify it, understand why it matters, and remove it effectively.
Class B
Noxious weed in Washington State
6 ft/yr
Growth rate — fast enough to outrun most natives
300,000+
Seeds a single mature tree can produce in a year
Photo: Darkone · source · CC BY-SA 2.5
Identify It
Leaves, bark, seeds, and the smell that gives it away — plus the native look-alikes people confuse it with.
The Problem
Where it came from, how it poisons its competition, and how it spreads.
How to Remove It
Why cutting it down alone makes things worse, and what actually works.
Get Involved
Report sightings, join a removal effort, and find local resources.