Mattawoman Watershed Society

09/23/2026

08/11/2026

Maryland State Park staff have planned an exciting lineup of activities for the 2026 Southern Maryland Senior Rangers Program! Registration opens August 1 at noon. https://ow.ly/eSzJ50Zn0Mo

Senior Rangers is a program designed for our retired population (55+) to get active, get back into their local state parks, sharpen their sense of wonder, meet new friends, and have a ton of fun! The program meets weekly for six, two-hour sessions. Participants can look forward to a variety of hands-on activities, outdoor adventures, and opportunities to learn more about Southern Maryland’s natural, cultural, historical, and recreational resources.

Please email [email protected] with any questions.

07/23/2026

A free Spirit Rock course with Jack Kornfield.

05/15/2026

Thomas Stone National Historic Site is proud to begin the Semiquincentennial season by welcoming visitors to explore one of Maryland’s most historically significant counties.

From the oldest Catholic parish in the United States to the residencies of several Founding Fathers, Charles County is home to an extraordinary collection of historic sites that help tell the story of our nation’s founding. To commemorate the beginning of America’s 250th anniversary season, staff from the Star-Spangled Banner National Historic Trail will join us at Thomas Stone National Historic Site on May 16 to share insights into how Maryland’s history helped shape the story of the United States.

05/09/2026

05/09/2026

Mattawoman, Nanjemoy, and Port To***co River are Bass Spawnning Areas, thank goodness. They are highlighted in RED. Closed for fishing.

Striped Bass Season Reminder: Some areas of the Chesapeake Bay and its tributaries are now open to striped bass fishing with a 1 fish per person per day limit for fish at least 19" and not exceeding 24".

Spawning rivers and the Upper Bay spawning area remain closed to targeting or allow only catch and release.

05/01/2026

Not every caterpillar is a problem. Some will become the butterflies and moths your garden depends on for pollination later in the season.

The key is learning the difference. Once you can recognize which species are worth keeping, your approach shifts. You stop removing everything—and start making space for the right ones to grow.

That doesn’t mean letting all caterpillars stay. Some can quickly damage plants if their numbers get too high. A healthy garden is about balance. Tolerate some feeding, protect vulnerable plants when needed, and step in only when damage becomes excessive.

A thriving garden supports both stages. Caterpillars now. Pollinators later.

Work with that cycle—and your plants, and the ecosystem around them, will be stronger for it.

05/01/2026