Friends of The Frelinghuysen Arboretum

Mansion Panorama

Welcome to the Friends Website


YOUR SUPPORT IS NEEDED! - learn more about us by reading below, then click the Donate button to give using a credit card.



We just heard from the Morris County Park Commission that the three horticulture parks will begin a limited reopening on Monday, August 3rd. Hours will be:

  • Frelinghuysen Arboretum: Mon - Fri, Noon to dusk.
  • Willowwood Arboretum: Mon - Fri, 10am to 3pm.
  • Bamboo Brook Arboretum: Mon - Fri, 10am to 3pm.

Parking will be limited. All buildings will remain closed. A porta-john will be available.

All park patrons will be encouraged to follow social distancing guidelines and if they can’t…then suggested to wear a mask. New signage will be installed on the property with the site hours and this type of information.

We will keep you posted as further updates become available.

Learn About the Friends

Building Community Through Horticulture -- Engage, Enrich, Educate

Through their continuing commitment and volunteer efforts, The Friends of The Frelinghuysen Arboretum foster and develop public awareness, knowledge and enjoyment of horticulture and the natural world, and of course, help to preserve and maintain the beauty of this most valued community and regional resource, The Frelinghuysen Arboretum.

Be sure to view our Gallery and Resources links which are updated regularly (see the menu at the top of every page).

Go really green and sign up for the electronic version of the Arboretum Leaves to be delivered to your email inbox. Just follow the instructions found in your paper Arboretum Leaves.

Finally, sign up for our weekly Email Blast by clicking here.

Frelinghuysen Arboretum Video

Enjoy this 2 minute long video introduction to the Arboretum, produced through the generosity of the Friends of The Frelinghuysen Arboretum.

Click on the image at right to play the video. Be sure to view it full screen to enjoy the beautiful photography. Then click the "Esc" key when done to return to normal viewing mode.


How to Keep Up With the Arboretum


We hate to see you miss a program you have signed up for, but we know things do happen.

Check out our Cancellation Policy.

If you are new to the Frelinghuysen Arboretum, keeping up with all the activities may seem daunting. Here are a few suggestions:

  • Browse our website regularly. We work hard at updating it regularly.
  • Look especially at our Events Page which changes regularly. It provides a detailed listing of programs scheduled for the next few months, including facilities for scheduling and purchasing on-line.
  • Become a member -- one of the many benefits is a regular newsletter, Arboretum Leaves available either in paper or pdf. See below for link.
  • Sign up for our regular email newsletter.

Non-Profit Status

The Friends of The Frelinghuysen Arboretum received acknowledgment from the US IRS of its non-profit status under Section 503(c)(3) in 1978. See this letter and recent annual filings (Form 990s) on our About the Friends page.

Other Items of Interest

The website is quite extensive, providing information about both the Friends and the Arboretum, a detailed Events Calendar plus helpful details for planning your visit. Use the navigation links at the top of every page. The "Home" button will bring you back to this page.