Hours:
Vielbig/Scerbo Environmental Education Center
Saturdays  9:00 AM - 12 Noon
Sundays   1:00 PM - 3:00 PM
Tuesdays  9:00 AM - 12 Noon

Grounds of the Thielke Arboretum
Daily Dawn to Dusk
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 docent form here.

    Contact Us:
Location:
460 Doremus Avenue
Glen Rock, NJ 07452
(201) 675-0947

Mailing Address:
​Thielke Arboretum Glen Rock, NJ
P.O. Box 34
​Glen Rock, NJ 07452

Location:
460 Doremus Ave.,
​Glen Rock, NJ 07452

Mailing Address: 
PO Box 34
Glen Rock, NJ 07452

Phone: 201-444-1270

Friends of the Glen Rock Arboretum, Inc. is a not-for-profit, 501( c)3 volunteer organization, dedicated to the preservation, maintenance and development of the Arboretum.