THIELKE ARBORETUM OF GLEN ROCK
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Where have all the fireflies gone? 

New Date: Friday, June 28, 2019 at 8PM
Meet in the Vielbig/Scerbo EEC

Picture
Where have all the fireflies gone? 

​Learn about how you can help bring fireflies back to your neighborhood at the special Nature Nerd Night starting at 8pm on Friday June 28st (raindate Friday, July 5th).  After we discuss fireflies, causes of recent population decline, habitat requirements and steps to help them return in your backyard, stay for the arboretum Firefly show.  At dusk the arboretum's fireflies emerge in awe-inspiring numbers.  Bring your lawn chairs or picnic blankets to observe this wonderful display of Nature's own Fireworks. Program is free and for all ages.

All minors 
must be accompanied by a parent or guardian to participate. Keep in mind, this a tranquil activity for special observation of a natural phenomenon, no collecting of fireflies is permitted, no running is allowed, and no loud or other disruptive behavior is permitted." 

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

Mailing Address: 
PO Box 34
Glen Rock, NJ 07452

​contact@thielkearboretum.org

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.

  • Events
    • Nature Sprouts
    • Winter Seed Sowing
    • Winter StoryWalk
  • Get Involved
    • Become a Member
    • Ways to Donate >
      • Buy A Paver
    • Volunteer
  • ABOUT US
    • Members/Donors
    • Mission Statement
    • Our History
    • Reserve the Arb
    • Photography Permit
    • Photo Gallery
    • Quarterly Newsletter
    • Contact Us
    • Trustees
    • Rules & Regulations >
      • Cancelation & Refunds
  • School Programs