Monthly Announcement

Buy your tickets!


Trees New York’s
Annual Celebration & Fundraiser


Wednesday, June 5th, 2024


Click to buy a ticket or to become a 2024 Benefactor!

Why do leaves change color in the fall?
Click here and watch Sam’s Video to learn more!


We are thrilled to announce the 2nd city-wide celebration of
New York City’s urban forest – City of Forest Day!


You are invited to come and participate in free, local events taking place in all of the 5 boroughs on Saturday, October 14th.  For more details and city-wide events located near you. Click for more info!

Please note that registration for the Citizen Pruner Course has been rescheduled to Saturday, September 30th at 11 am.  To avoid any technical difficulties with our server, we moved registration over to Eventbrite.  Please use the following link and click on the “Details” button to the right to select your preferred date and time:

Thank you for your patience!

We are pleased to announce that the server issue has now been resolved and we will reopen Citizen Pruner registration once again on 4/10 at 7 pm.

Watch Sam’s Video

Why do leaves change color in the fall?


To enter the fall Citizen Pruner Challenge, you must complete a street tree care activity and record it on the NYC Parks Street Tree Map.  LEARN MORE! 

Green Horizons 

Date: Thursday, October 17, 2019
Time: 9 a.m. — 2 p.m.
Location: Snug Harbor Cultural Center and Botanical Garden, Staten Island
Guidance Counselors and Science Teachers: CLICK TO REGISTER
  • Save the Date for Trees New York’s Annual Celebration
  • 2023 Year In Review
  • Learn About Winter Tree ID
  • Year-End
  • 2nd Annual City of Forest Day!
  • Citizen Pruner Course Registration
  • Green Horizons Registration
  • Sam’s Tree Tips
  • Why Leaves Change Color
  • Watch Sam’s Tree Tips Video!
  • Read the 2021 Year In Review!
  • Greening the South Bronx!
  • How To Care For Your Tree
  • Citizen Pruner Challenge
  • Green Horizon now open for Registration!
  • Trees Please! Carol Kelley Tree Fund
  • Register for an Upcoming Event
  • Register for upcoming events


We plant, preserve and protect New York City’s street trees through education and community participation

Young Urban Forester Internship

Young Urban Forester Internship

The Young Urban Forester Internship has a positive impact on the interns and provides tremendous environmental benefits.

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Youth Environmental Literacy

Youth Environmental Literacy

We educate and inspire New York City youth through hands-on activities and classroom studies.

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Citizen Pruner

Citizen Pruner

Master the Art of Tree Pruning!

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Tree Plantings

Tree Plantings

Every new tree improves the health and beauty of our city and offers a valuable learning opportunity.

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Tree Care Training

Tree Care Training

Trees New York trains New Yorkers so that they can play an active role in supporting the health of our urban forest.

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Our Projects

Our “learning-while-doing” approach provides volunteers with the knowledge and skills to ensure that our street trees thrive.