Thielke Arboretum Glen Rock, NJ

09/07/2026

08/17/2026

🌿 A Morning of Nature, Art & Connection — Just for Seniors! 🎨

Join us for for a peaceful morning of Nature Journaling & Watercolor Sketching.

Enjoy a gentle walk through the woods and paint what catches your eye — a leaf, a fern, or the light through the trees. No artistic experience necessary, and all materials are provided!

📅 Saturday, September 12
⏰ 10:00–11:30 AM
📍 Thielke Arboretum | 460 Doremus Ave., Glen Rock

🌱 Space is limited to just 10 participants! Register in advance at thielkearboretum.org

08/14/2026

🌿 Medicinal Botanicals in Colonial America 🌿

How did people treat illness before modern medicine? Join the Garden Club of Hackensack for an intriguing presentation exploring the important role medicinal plants played in health and survival in early America.

Learn how colonists and Native tribes used native flora to treat illnesses and discover the fascinating history behind these traditional botanical remedies.

📅 Wednesday, September 9
⏰ 7:00 PM
📍 Hackensack Recreation Center
116 Holt Street, Hackensack, NJ

🌱 Come discover the fascinating connection between plants, history, and healing!

08/07/2026

🚨 IMPORTANT CLOSURE NOTICE 🚨

Thielke Arboretum will be closed from dawn to dusk on Wednesday, August 12 while important tree work and habitat restoration is underway.

🚫 No entry will be permitted during the closure.

🌿 These restoration efforts help keep our trails safe, protect native habitats, and ensure the Arboretum remains a beautiful place for everyone to enjoy for years to come.

Please plan your visit accordingly, and thank you for your patience and support as we care for this special natural space. 💚🌿

07/31/2026

🌿🎨 Nature Crafters continues this summer through August 27! 🦋

Join us for FREE, fun, nature-inspired crafts every Tuesday and Thursday from 2–4 PM! A new craft each week means there's always something new to create. ✂️🌸

✨ All ages welcome!
👧 Crafters under 10, please bring an adult.
📍 Thomas Vielbig & Thomas Scerbo Environmental Education Center
460 Doremus Ave., Glen Rock, NJ

Come get creative and enjoy some summer fun at the Arboretum! 🌻💚

07/26/2026

📚🌿 A New Story Walk is Up at Glen Rock Arboretum! 🌿📚

Take a walk, enjoy nature, and discover a wonderful story along the way! This month’s Story Walk features A Color of His Own by Leo Lionni, a beautiful story about a chameleon searching for a color he can call his own. 🌈

Bring the kids and explore the trails while reading this colorful and heartwarming tale together. It’s the perfect way to combine reading, nature, and family fun! 📖🌳

📍 Glen Rock Arboretum
👨‍👩‍👧‍👦 Great for families and young readers
🌿 Come walk, read, explore, and enjoy!

07/24/2026

A fun, free event for any night owls who want to masquerade as citizen scientists! We will lure moths with a black light and photograph them against a white sheet to help scientists collect valuable data to better understand these beautiful pollinators of the night. No registration required, all ages welcome!

https://nationalmothweek.org

07/16/2026

Follow this link to register: https://glenrocknj.activityreg.com/selectactivity_t2.wcs?leaguesid=289

06/28/2026

✨ Don't forget—Firefly Night is tonight! ✨

Join us tonight at 8:00 PM at Thielke Arboretum with Girl Scout Troop 98399 for an evening of firefly spotting, learning, and outdoor fun!

🌟 Free event
🌟 All ages welcome
🌟 No registration required

Come discover the magic of fireflies and learn how you can help protect them. We hope to see you tonight!

06/24/2026

🦋 FREE Summer Crafting at Thielke Arboretum! 🌿

Looking for a fun afternoon activity? Join us Tuesdays & Thursdays from 3–5 PM throughout July & August for Nature Crafters at the Arb!

🎨 New nature-inspired craft every week
🌼 All ages welcome
📍 460 Doremus Ave, Glen Rock, NJ

Bring your creativity and enjoy some summer fun in nature! 💚