Get to Know the Waltham Land Trust

June 28, 2025

On May 7, Waltham Land Trust Executive Director Sonja Wadman was the featured guest in the League of Women Voters’ Know Your City series. In this engaging conversation, Sonja dives into the heart of the Land Trust’s mission, ongoing projects, and its growing impact on the Waltham community.

🎥 Watch the full interview on YouTube

🌿 What Is the Waltham Land Trust?

Founded in 1999, the Waltham Land Trust (WLT) is an environmental nonprofit dedicated to conserving open spaces, restoring ecosystems, and connecting the community to nature. The idea was born out of frustration that the city was neglecting opportunities to preserve green space. Citizens joined forces to create a city-wide organization—and the WLT was born.

Since then, WLT has:

  • Trained over 300 trail stewards
  • Supported native habitat restoration
  • Advocated for land conservation protections
  • Launched community programs like Save Waltham Wildlife
  • Hosted signature events like the Green Space Blues Jam and 5K Trail Run/Walk

🧤 Powered by Volunteers

WLT thrives because of its passionate volunteers—especially the Trail Stewards who help maintain local trails, remove invasive species, and plant native vegetation. There’s also a core group helping with outreach, mailings, and events. WLT volunteers are truly the lifeblood of the organization.

💡 Education & Advocacy

From informative e-newsletters to hands-on events, WLT keeps the public engaged and informed. The team also advocates for conservation restrictions on city-owned land, ensuring green spaces are preserved for future generations.

WLT has also been instrumental in raising awareness about the dangers of second-generation anticoagulant rodenticides (SGARs), which pose serious threats to local wildlife and pets. Through the Save Waltham Wildlife campaign, they are working with the city and institutions like Brandeis to promote safer alternatives.

🗺 Trails and Access

Waltham is rich in trails, but many residents don’t know where to go or how to access them. WLT offers printable maps and guides on their website for dozens of open spaces. While many trails are wooded and not ADA-accessible, WLT is working to identify and highlight more accessible options.

Some trail hubs include:

  • Prospect Hill Park
  • Mass Central Rail Trail
  • Charles River Pathway
  • Beaver Brook Reservation

🛠 Big Projects Underway

Sonja shared updates on several exciting projects:

  • Connecting the Western Greenway to the Mass Central Rail Trail, including a proposed bridge over a waterway near the Lyman Estate.
  • Lakeview Preserve—WLT’s first owned land on the shores of Hardy Pond, where green infrastructure will reduce runoff and improve water quality.

🎶 A Night to Remember: Green Space Blues Jam

Held at the historic Stonehurst Estate, the Blues Jam is one of WLT’s biggest fundraisers. Attendees enjoy live music, local drinks, and a silent auction—all supporting land conservation. Discounts are available for members and attendees under 40.

💚 Become a Member or Supporter

WLT is funded through memberships, donations, grants, and event sponsorships. Annual membership starts at just $25, with a “living lightly” option at $15 for seniors, students, and others. Members receive newsletters, discounts to events, and the satisfaction of supporting Waltham’s green future.


Want to get involved?

Recent Posts

By N/A N/A July 7, 2026
Families of children ages 0-10 are invited for a free, leisurely nature walk along the MCRT, which is paved and perfect for strollers! We’ll identify native plants, listen for birds, and look for insects . Each child gets a prize ! Rain or extreme heat postpones to July 12, same time. No unaccompanied minors. Bring sunscreen, bug spray, water, and hats.
By N/A N/A June 26, 2026
Unwind, relax, and unplug performing gentle and restorative yoga outside at the Land Trust's Lakevew Preserve on the west shore of Hardy Pond. Laura Arena, a popular instructor at the Waltham YMCA, will lead us through a series of stretching, holding poses, and deep breathing while we admire the pond before the sun sets! This is a rescheduling of the postponed June 30 event and if you signed up for the original yoga session on June 30, please do not register for this--we will carry over your registration
June 21, 2026
June 2026
By N/A N/A June 11, 2026
Waltham RiverBeat will have multicultural music, food, art, activities on/along the river including nature and history walks led by Waltham Land Trust!
By N/A N/A June 6, 2026
Over twenty people celebrated National Trails Day by removing litter with stewards from the Waltham Land Trust from along the Mass Central Rail Trail (MCRT) between Hammond Street and the reNEW apartment complex east of Linden Street. We were thrilled to see nature as well! Many thanks to everyone who helped. Remember, you can park in designated Rail Trail spots along the path in the AutoZone lot on weekends!
By N/A N/A May 18, 2026
BY NEWSROOM ● May 18th, 2026 ● The Waltham Times
By N/A N/A May 18, 2026
It’s time to start the garden and yard projects! Buy seeds, plants, garden supplies, groceries, deli sandwiches, flowers, fruit baskets, fish, etc., and and the Waltham Land Trust gets 20% of your purchase with this coupon .
By N/A N/A May 17, 2026
Support the mission of the Waltham Land Trust by bidding on items in our silent auction.
By N/A N/A May 15, 2026
Over 80 people came to the historic Paine Estate for engaging conversations, yummy snacks, thirst-quenching drinks, live music, and auction item viewing during our biggest fundraiser of the year. Michelle Willson and Shinichi Otsu were our talent, and boy did they rock! Many folks placed bids on items from the online auction and everyone had a fabulous time in a spectacular space that is rarely open to the public. Many thanks to everyone who came and/or participated in the auction!
By N/A N/A April 30, 2026
WLT expert birder Emily Szczypek led a group of nine birders along the Charles River to admire resident birds and those who were migrating through the area, plus some other riparian wildlife. This was a joint program with Brookline Bird Club and Menotomy Bird Club. It was a chilly morning, but everyone saw lots of birds and had a lovely time. At the end, they ran into magnet fisher and WLT steward Alessio with a helper at the Mary Early footbridge!