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Welcome to The Thielke Arboretum, Glen Rock, New Jersey!

The Garden in Your Backyard

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Winter Journey Sticks Wal
Bark ID Workshop
Winter StoryWalk
Weed Warrior Day 2016
Nature Journaling 2016
Fishing Derby - 2016
Bird Watching
Spring StoryWalk
Summer StoryWalk
Fall StoryWalk
Country Music Benefit Con

You are invited to join us on Saturday, October 15, 2016 (rain date Saturday, October 22nd) from 9:30 AM – 12 noon, for our seasonal Weed Warrior Day stewardship project.  This time, we will be targeting two species:  Porcelainberry and Privet.  Porcelainberry is a highly invasive vine from Asia that looks very much like our native grape vine.  Privet is a commonly planted invasive shrub that invades our woodlands and believe it or not, most nurseries sell it and most landscapers plant it. 


Learn to ID these plants from their first leaves as a seedling, to its full grown appearance.  In addition, our expert ecologist from Rutgers, volunteer Jean Epiphan, will be on hand to share her wisdom about these and other invasive plants that may be homesteading on your own property, such as:  Japanese honeysuckle, Asiatic bittersweet, wisteria, English ivy, myrtle, amur honeysuckle and others. 


No experience is necessary.  We will train you onsite to help restore a healthy balance to our environment.  Wear boots, long pants, and long sleeves.  Bring gloves, kneelers, pruners, and drinking water.  We will have extras on site if you don't have them. 

It's a beautiful time of the year!  Bring your family and friends, socialize, enjoy nature, care for this earth, invest in the land for the next generation, and enhance the beauty of this peaceful place, right near downtown Glen Rock. 


We appreciate your interest in helping to maintain and restore this vital freshwater wetlands and forest habitat.  See you at the Arb!