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Rutgers Master Gardeners of Mercer County educate the community about research-based horticulture and gardening practices through a network of trained volunteers directed and supported by Rutgers University faculty and staff. Master Gardeners have a long history of service to the public and work to inspire the residents of Mercer County to participate in the rewarding experience of responsible gardening. Click here for more information about the program.
Upcoming Events
- November 13, 2025 – 3:30 to 4:30 pm – Growing Great Garlic
1440 Parkside Ave, Ewing, NJ
A hands-on guide to prepping, planting, and growing your own garlic with Mercer County Horticulturist, Justine Gray!
Rutgers Master Gardener Helpline
Home gardening, plant, lawn, or insect questions? Wondering which result from your Internet search is the correct answer? We can help! Trained Master Gardener volunteers will research your inquiry to provide you with accurate, science-based recommendations regarding your questions. Please allow 48 hours for a response.
Ways to contact us
- In-person at: 1440 Parkside Avenue, Ewing, NJ 08638. Please bring samples and/or photographs* of plants, lawns, insects, etc. needing identification or diagnosis.
- Call us: 609-989-6853. Leave a message if you are calling outside of Helpline hours.
- Send us an email at: AskTheMGs@mercercounty.org Include your phone number, township and any photographs*
* Samples and photographs aid us greatly in resolving your questions! Take close-ups as well as
wide-angle views, so we can see the entire plant, area of lawn, insect, or setting of concern.
Interested in having a Rutgers Master Gardener of Mercer County speak at your organization or event?
Our Speaker’s Bureau has trained volunteer educators who can present on a variety of topics. Presentations are limited to within Mercer County and are subject to availability. To book a speaker, email Justine Gray, Horticulturist, at justine.gray@rutgers.edu .
Our Gardens:
The Rutgers Master Gardeners of Mercer County. Maintain two educational gardens to promote community education throughout the county of Mercer.
The Mercer Educational Gardens (MEG) are located at 431a Federal City Road in Pennington, NJ The Parkside Educational Gardens (PEG) are located at 1440 Parkside Avenue in Ewing, NJ. Both gardens hold public events and programs several times a year.
Stay Connected!
Join our email list for Monthly Gardening Tips, links to wonderful websites and webinars, plus updates from our Mercer County Horticulturist. Click here to sign up.
Don’t forget to follow us on Facebook and Instagram to keep updated on all the latest news and events!