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Why Trees

Planting themselves is one of the only things that trees CAN‘t do

Trees are powerful forces of nature. We all know that they contribute to a cleaner environment, but they’re also critical to even aspects of life you might not expect like personal health, well-being, and quality of life.

Photo Credit: Chesapeake Bay Program

Photo Credit: Chesapeake Bay Program


trees are powerful (and natural) water-treatment plants

Pennsylvania is a water-rich state with over 85,500 miles of rivers and streams, which means we have a lot of natural water to keep clean. Trees naturally reduce polluted runoff and stabilize streambanks, supercharging our streams’ ability to cleanse themselves of pollution. Buffers planted along streamsides have been proven to increase a stream’s ability to process nutrients and organic matter itself by up to 8 times.


trees are good for your health

Trees filter the air we breathe and the water we drink, absorbing and breaking down pollutants before they can do us harm. Plus, they’ve been linked to lower blood pressure, reduced stress, and improved moods.

Economic Health

trees bolster our economy

Trees impact our state’s economy in both obvious and surprising ways. The landscaping and nursery industries rely on income from tree sales, while Pennsylvania’s massive outdoor recreation industry relies on trees’ ability to shade, clean, and feed cold streams. Trees have also been linked to increased productivity in the farming industry.

On a per capita level, trees can reduce residential costs like heating and cooling, water treatment, and flood and stormwater treatment. They’ve also been proven to reduce health care costs and increase property values.

Photo Credit: Chesapeake Bay Program

FARM Health

trees keep our farms on solid ground

Trees help keep one of Pennsylvania’s greatest assets – its soil – on the field where it’s needed to produce the food we eat. Tree roots, woody debris, and leaves help improve soil health, stabilize streambanks, and shade animals in pasture.


dig in to the movement

Learn, watch, then get involved!

  • Photo Credit: BJ Small

    learn the science

    Just the facts in black and white (and a little bit of green).

  • Photo Credit: Chesapeake Bay Program

    how we do it

    We WILL get 10 million trees in the ground by 2025.

  • Photo Credit: Arbor Day Foundation

    video + audio

    Expert advice and information on how - and why - to plant trees.