Prohibited Trees

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Prohibited Trees

  • Trees with roots that can obstruct or injure sewers or underground utilities, such as willow, cottonwood, or poplar, are not permitted without the approval of the Director of Public Works. 
  • No trees or shrubs that hinder the public right-of-way can be planted either. Certain trees are never allowed to be planted in the public right-of-ways, see below.

Tree species not allowed in public rights-of-way

  • Fruit trees (except for ornamental types)
  • Nut trees
  • Ailanthus
  • Mountain Ash
  • Oregon or big leaf maple
  • American elm, or 
  • Any other tree whose roots may cause injury to sidewalks or pavements.  


Call the Community Development Department at (360) 754-4180 or