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.

Saturday, January 25, 10:00am – 12:00pm
Litter cleanup between Wayne and Colesville Rd.

Meet at the parking lot just north of Three Oaks Drive. We will have grabbers and bags. Hope to see you there! ~Carrie

Sunday, Feb 2 from 1:00pm – 3:00pm
Litter hotspot cleanup at Wheaton Branch stormwater ponds
Dennis Ave. and Hemley Lane, Silver Spring 20902

Join us at the Wheaton Branch stormwater ponds. Please bring work gloves if you have them. We’ll provide the trash! And trash bags and recycling bags, of course.

Sunday, Feb. 2 from 1:00pm – 3:00pm
Weed Warriors at Clayborn Ave and Long Branch

Across the bridge from Rolling Terrace Elementary School. Look for the weed warrior sign and the tall man in the WW hat! We will be focusing on English Ivy and may get to other NNIs.

Who: Anyone interested in helping beautify our communities, helping our oxygen-giving, carbon-fixing trees be healthy or if you need community service hours for school. If you are interested in becoming a weed warrior, find out more here.

What to bring: bring loppers and pruners and/or folding saws. (I have extra pruners and loppers.) Also wear long sleeves, pants, gloves, sturdy shoes, and bring water!

Parking: Plenty of parking on the street or at Rolling Terrace Elementary School.

Sign up here on the Parks volunteer webpage. Non-weed warriors are welcome but MUST register!

Looking forward to seeing you there! – James Gulley

Tuesday, Feb. 4 from 7:30pm – 8:30pm
Weed Warrior program for interested people

Corinne Stephens, head of the MoCo Weed Warrior program, will give a zoom talk about the basics of non-native invasives (NNIs), top NNI species, and what the numbers are like in the Sligo Creek and Northwest Branch watersheds.

We will learn all that volunteers did to save the parkland trees in past years and how we can join the effort this year. Register on zoom!

Saturday, Feb. 15 from 9:00am – 11:00am – two events
1) Litter Cleanup with FOSC and Potomac Conservancy
at Sligo Creek and East-West Highway, Chillum

Please join Friends of Sligo Creek stewards and the Potomac Conservancy for a trash cleanup at this beautiful part of Sligo Creek. Please be sure to register here so that you can receive any updates as we approach the cleanup date. Thank you! Lots of street parking available.

2) Litter Cleanup with FOSC and Potomac Conservancy
at Green Meadows Park,
6310 Sligo Parkway, Chillum

Please join Friends of Sligo Creek stewards and the Potomac Conservancy for a trash cleanup at Green Meadows Park. Please come out and support this part of Sligo Creek. Be sure to register here so that you can receive any updates as we approach the cleanup date. Thank you! Lots of parking available.

– Nick Clements, Litter Hotspot coordinator

News & Updates

FOSC in the News

FOSC’s efforts to support the plastic bag ban at the County Council hearing last Tuesday were noted in Bethesda Magazine’s Jan. 14th article, Supporters turn out for proposed plastic bag ban, citing environmental impact. Several members of the FOSC Advocacy committee testified in favor of the ban. Similar bans in Prince George’s and other nearby counties have been successfully implemented with little drama.

Winter scenes from Sligo and Long Branch

(Photos by Nathalie Peter – LB near Becca Lilly park, Lenore Boulet – footbridge over Sligo, and Susan DeFord – snow on native coneflowers)

The FOSC Salt Monitoring Program measured extremely high salt levels throughout Sligo Creek, Wheaton Branch, Long Branch, and Takoma Branch starting with our first snow storm and continuing to date. We are collating the data as of Jan. 14, 2025. It will be reported soon on the Salt Monitoring Initiatives page under the Water Quality Monitoring programs tab.

Email the Water Quality committee at [email protected] to learn more and become a tester.

Support Friends of Sligo Creek and help the creeks thrive in 2025!

Your support is key to our success.

    Sweep the Creek and Litter Hotspot clean-ups
    Weed Warrior work sessions to remove invasive plants
    Salt, E. coli, and other testing to understand threats to water quality
    Advocacy work on many issues to protect the creeks
    Water WatchDogs pollution reporting
    Natural history posters for the kiosks
    Outreach to neighbors in English, Spanish and Amharic

 

Sligo and Long Branch are in fine color this fall

This short YouTube video shows the beautiful fall pictures taken by longtime FOSC member Michael Wilpers in the Park. Thank you, Michael, and thank you Ed Murtagh for creating the video.

Check out the many other FOSC videos on our Youtube channel.

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 above.

Join FOSC

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)

Winter 2025 Top Invasives

 Invasive: Italian Arum

Italian Arum is back in force around Sligo Creek and Long Branch. It has spread from nearby yards. 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