Trees

How Do Trees Affect Stormwater?

  • Trees absorb stormwater through their roots and slow the flow of rainfall with their canopies.
  • Tree roots allow rainwater to filter back into the soil, recharging the water table.

    • Why Plant Trees?

  • Trees contribute oxygen to our atmosphere, clean pollutants from the air and reduce temperature extremes.
  • Trees are attractive additions to the landscape and can increase property values.
  • Trees are free! Philadelphia residents can apply for trees to be planted for free on their property through Treevitalize Philadelphia, Fairmount Park or Philly Tree People.

    • Facts About Trees

  • If you choose the correct tree, site and planting conditions, your
    tree should NOT interfere with your sewer or water lines, sidewalk or
    building foundation.
  • Most tree roots grow in the soil’s top 12 inches and spread well beyond the tree’s canopy in search of water and nutrients.
  • Tree roots don’t “attack” underground mains unless these are already damaged, providing entrances for developing roots.
  • An adequate and generous tree pit or long, narrow continuous “tree
    lawn” will provide the best conditions for establishing and maintaining a
    “well-behaved” tree with the environment needed to survive in the city.
  • If you cannot plant a tree on your property, you can always take a
    free course to help tend to the trees in your neighborhood: Become a
    Tree Tender: Pennsylvania Horticultural Society
    		•
    Photo: RP3 Travis Strother, US Navy

     

    How to Plant a Tree

    If you decide to plant your own tree, these Tree Planting Instructions will help you to plant a healthy and happy tree that will prosper in your home landscape.

     

    For More Information
    Philly Street Tree Fact Sheet
    Fairmount Park: Philadelphia Street Trees
    Philly Tree People
    Plant One Million Trees
    Philadelphia Orchard Project
    Pennsylvania Horticultural Society: All About Trees
    Sidewalk Trees & House Sewer Laterals
    Philadelphia Street Tree Species List
    Become a Tree Tender

    Disclaimer

    This website content is provided to you on an “AS IS” and “WITH ALL FAULTS” basis. You acknowledge that you assume the entire risk of loss in using this information, including without limitation any loss incurred by any End User. You further acknowledge that this content is complex and may contain some nonconformities, defects and/or errors. PWD does not warrant that this website will meet your needs or expectations, or that all nonconformities can or will be corrected. PWD assumes no risk, liability or responsibility for the accuracy of this guide. See full disclaimer