What FOSC does

Friends of Sligo Creek (FOSC) offers events year round in support and appreciation of Sligo Creek and adjacent parkland. Litter clean-up and invasive plant clear-out events are among the most popular FOSC activities in the spring, summer and fall. FOSC also sponsors guided outdoor explorations of different aspects of Sligo Creek flora and fauna. A wide variety of other programs throughout the year educate neighbors and users of the park about Sligo Creek’s strengths and challenges. FOSC also monitors the creek, advocating for civic policies that will support a healthier Sligo.

FOSC invites you to visit the creek, volunteer at an upcoming event, attend a program, advocate for the Creek, and join FOSC.

Howard EcoWorks and Seeds of Change with Founder Lori Lilly

Wed, July 17 at 7:00pm on Zoom at this link

Planting, conservation, community engagement in green projects, native nursery with workforce development…find out what Howard EcoWorks does and how they do it through innovative, multi-goal programs and projects with people and plants.

Lori Lilly, the Founder and Executive Director of Howard EcoWorks, will speak about the many ways that this non-profit organization uses native plants and an understanding of natural systems to create innovative solutions, partnerships, and a skilled workforce to support resilient communities. EcoWorks initiatives include the Seeds of Change native plant nursery operated from the Howard County Department of Corrections, which provides in-mates and returning citizens opportunities to engage in nursery maintenances. Lori began this program at the detention center in 2016 and will discuss its development over the years. FOSC’s Native Plant sale last fall (and the coming Native Plant sale this fall) sourced the plants from the Seeds of Change nursery.

Ms. Lilly started Howard EcoWorks in 2016 to be a force for social and environmental change. She has a background in watershed planning and restoration, has been actively involved in Ellicott City flood remediation efforts over the years and, in a past life, enjoyed traversing the Sligo Creek watershed looking for illicit discharges in coordination with Montgomery County.

Stewardship Day – Litter Hotspot Clean up and Weed Warrior event – choose your own activity

Sat, July 20 from 9am – 11am

Meet at the Kemp Mill Shopping Center, 1370 Lamberton Drive, Silver Spring, MD at the far end of the parking lot by the entrance to the Sligo Creek trail.

Choose to help with:

1. Litter Clean up

Join FOSC and One Montgomery Green for a litter hotspot clean up. Help beautify the park, protect wildlife and keep litter out of Sligo Creek.

Please wear long pants that cover your ankles, long sleeves, and sturdy, closed-toed shoes or boots. Wear gardening-type gloves, if you have them! Please bring water to drink. FOSC will provide bags and some gloves and trash grabbers.

  • Children under 14 years old must volunteer with a parent/guardian.
  • The cleanup is pre-approved for SSL hours. Forms are provided after the cleanup.
  • Register here: https://lp.constantcontactpages.com/ev/reg/f8kxyaj
  • This opportunity is not eligible for court-ordered service.

Group leaders:
One Montgomery Green: Liz Torres and Maggie Spire
Friends of Sligo Creek: Nick Clements and Ed Murtagh

2. Weed Warrior vine removal

Around the Kemp Mill stormwater ponds there are many caged young trees as well as older trees that need to be cleared of NNI plants.

Please dress with long pants, long sleeve shirt, close-toe shoes, gloves and hat. Bring loppers if you have some.

If you have questions on either activity, contact Nick Clements or Ed Murtagh at [email protected].

Weed Warriors – Long Branch at Long Branch Stream Valley Park
Sun, July 21 from 8:30am – 10:30am

Meet south of Long Branch Stream Valley Park – Long Branch around Prospect Street.

We will be focusing on porcelainberry and may get to other NNIs. We will be meeting just North of where we met last month.

If you are not yet a weed warrior, please register here: https://montgomeryparks.org/event/weed-warrior-long-branch-sv-unit1/

Bring loppers and pruners and/or folding saws. Also wear long sleeves, pants, gloves and sturdy shoes. I have a few extra pruners. And bring water!

–James Gulley

Sligo Stream Monitoring for Macroinvertebrates
Sun, July 21 from 4:00pm – 5:00pm (Rain date is Sunday July 28 at 4:00pm)

The closest address to the neighborhood paved access trail leading to the stream is 1400 Drexel St, Takoma Park, MD 20912. Head down the hill and turn right onto the Sligo Creek trail. The geolocation for the trailhead is 38.977537, -76.986091. There is street parking available. Go right when you reach the Sligo Creek trail.

News & Updates

The Sligo Garden Program is Sold Out!

The Sligo Garden Program 2024 has sold out of both the garden kits and the design consultations. Every native plant counts for pollinators, and every sq ft of permeable conservation landscape helps absorb rainwater and reduce the stormwater entering the creek. You are adding resilience to our local ecology. Thank you to all who have participated in this program. We hope to obtain further grant funding to bring back this popular program.

Want to know what it was all about? Check out the Sligo Garden Program page under the Stormwater tab in the menu above.

President’s Day Sweeps pulled a huge amount of litter from Sligo

Mini-sweeps at 3 trash hot spots yielded an impressive amount of trash from the creeks over the President's Day weekend. Altogether, 101 volunteers hauled 118 bags of trash, [...]

Faring well? Sligo and Long Branch in a warming climate

Faring well? Sligo and Long Branch in a warming climate How healthy are Sligo, Long Branch and NW Branch? The Water Quality Committee of FOSC invites you [...]


FOSC logo

Sligo Creek connects us. Please join FOSC and help protect and restore the Creek for everyone in our community. It’s simple to do and can be free if you wish. Membership gives you early notice of events and the FOSC newsletter.

You can make a donation too, either online (simple and secure) or by check to FOSC, P.O. Box 11572, Takoma Park, MD 20913. Thank you!

FOSC Action Hub

Sligo Creek Water WatchDog mascot

Report water pollution ASAP!
Send an email to:
[email protected]

You play an important role protecting Sligo. Please report any pollution you see in the creek or heading into a storm drain ASAP, with photos, which help County investigators find and fine the pollutors.

A lone duck swimming in polluted water in between sewer pipes crossing the stream.

A lone duck swims in polluted water between sewer pipes crossing Brashears run near Maple Ave. in March 2024. (Sally Taber photo)

Summer 2024 Top Invasives

 Invasive: Italian Arum

Italian Arum is back in force around Sligo Creek and Long Branch. One of the EDRR (Early Detection, Rapid Response) invasive species, it has many little “daughter” corms attached to its main corm which makes it difficult to remove completely. Dig it out carefully. Screen the loosened soil for small “daughter” corms. There is some evidence that spraying with glyphosate is effective at killing all its corms.

FOSC Videos

See many more on the FOSC Youtube Channel

 FOSC on iNaturalist

Pine Siskins at Wheaton Branch Ponds by Stephen Davies

Heard about FOSC on iNaturalist.org but uncertain how to navigate the site or contribute your own observations? Expert birder and iNaturalist… Read more

FOSC on YouTube

Support FOSC

Donate to Friends of Sligo Creek

FOSC on Facebook

Get Involved

  • Participate in your community
  • Meet your neighbors
  • Improve your surroundings
  • Enhance your skill set
  • Advocate for the Creek
  • Arrange a group activity for your club or group
  • Receive the monthly eNewsletter
  • Get early notice of events and special opportunities
  • Have your name forwarded to your Section Steward for hands-on events
  • Contribute to special projects
  • Fund outdoor events, expert talks, equipment for invasive plant/litter removal, the kiosks in the park, water quality testing, and more
  • Support FOSC’s outreach to schools, civic groups, and all communities
  • Tell us about your experience at a FOSC event
  • Suggest an activity
  • Voice your concern about an environmental issue
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