Friends of the Glen Rock Arboretum, Inc. is committed to preserving, developing and the continued existence of the arboretum in Glen Rock, NJ, a designated wetland forest; and to the conservancy of its native plants and natural habitats for wildlife. 

The Thielke Arboretum of Glen Rock depends solely on donations and volunteers to operate, preserve, and maintain the arboretum, and offer programs such as the annual Fishing Derby, Nature Journaling, New Jersey State Standards based programs, and all the other wonderful events. The Arboretum has 501(c)3 status and is approved by many corporations for Corporate matching. Donations directly go to the care of the Glen Rock Thielke Arboretum. Please consider donating now​.

Visit us soon!

The BEST setting for your photoshoot!
We have the perfect setting for family, engagement/ wedding photos, or head shots. If you use a professional photographer, please be sure to get a photography permit.
Hold your special private event - did you know you can reserve the arboretum?
Attend a scheduled public event.
​We hold events and workshops all year long.
Private events for school-aged children.
​Learn more about our School Programs.
Hours:
Vielbig/Scerbo Environmental Education Center
Sunday: 11:00AM - 1:00pm
Thursday:  2:00pm - 5:00pm
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​The hours of the EEC are open subject to volunteers.  If you would like to see the building open more days or times consider being a volunteer.  If interested complete the Ambassador form here.

Grounds of the Thielke Arboretum
Daily Dawn to Dusk

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Thielke Arboretum Glen Rock, NJ
Located at:
​460 Doremus Road
Glen Rock NJ, 07452
(201) 444-1270

    We'd love to hear from you!
If you'd prefer to send us a letter, send it to:

​Friends of the Glen Rock Arboretum
PO Box 34
​Glen Rock, NJ 07452