Thielke Arboretum Glen Rock, NJ

09/17/2026

🌱 Thielke Thursday Presents: Native Seed Collecting! 🌿

Join us Thursday, October 8 from 4:30–6:00 PM to learn how to collect native seeds for your home garden!

🌼 Learn best practices for seed collecting
🌱 Discover which plants support pollinators
🌿 Learn about the best planting sites

💲 $10 per person | Members receive 20% off
⏰ Space is limited!

Register at thielkearboretum.org/events

And did you know the Glen Rock Public Library maintains a FREE Seed Library? Learn more about how you can participate and help it grow! 🌻

09/16/2026

🎶 Enjoy 250 Years of American Music with Us This Weekend! 🎶

Join us for an afternoon of patriotic music and community honoring 250 years of American Music. Bring your chairs and blankets, relax under the trees, and soak in the sounds.

🎵 Free admission- donations always appreciated
📍 Thielke Arboretum
🗓 September 19 at 4:00 PM (Rain Date: Sunday, September 20 at 2:00 PM)

09/13/2026

🌱 WE ARE SEEKING SEEDS! 🌱

Help us grow our Glen Rock Public Library Seed Library! 🌻

We’re looking for edible, native & pollinator-friendly seeds to share with our community.

Have seeds to donate? Please label them with the plant name + harvest year and drop them off at the Glen Rock Public Library Reference Desk or Thielke Arboretum.

🌿 Share a seed. Grow something wonderful! 💚

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