Seneca Creek Watershed Partners

Seneca Creek Watershed Partners SCWP became a 501c3 in 2013. Joining SCWP is free.

Seneca Creek Watershed Partners (SCWP) was formed in 2008 to protect the largest watershed in Montgomery County that includes Great Seneca, Little Seneca and Dry Seneca Creek subwatersheds.

The annual Kelley Park cleanup is this Saturday, April 4, 10 am - 12. Please join us!
04/01/2026

The annual Kelley Park cleanup is this Saturday, April 4, 10 am - 12. Please join us!

All of the native trees have been distributed. Most trees went very quickly on Thursday at both the Darnestown and Senec...
03/29/2026

All of the native trees have been distributed. Most trees went very quickly on Thursday at both the Darnestown and Seneca State Park locations. Special thanks to Jeff and Merikay Smith and Bonnie Bell for running each location and the other volunteers who helped to efficiently distribute the trees.

There were people lined up even before we got started (see photo). We may consider distributing in a different way next year. Our apology if you came and were not able to get the tree species you wanted.

We did share 500 trees and shrubs. This is the 12th year that Merikay has led this event for both SCWP and MBA and during that time ~5,000 trees have been distributed. The project was originally started by the Muddy Branch Alliance in ~2013. Bonnie Bell has also helped for many years leading the distribution from Seneca State Park and always invites the Friends of Seneca Creek State Park.

03/27/2026

It's 11 am Friday and I still have a few each of red oak and white oak. Plus about a dozen pin oaks. These are all great trees but do need ample space to grow. Contact Merikay or drop by at 14909 Spring Meadows Drive.

03/26/2026

Free Trees are already gone at the Darnestown location except for the oaks-- pin oak, red oak, white oak are all still available. Thanks to all who came! Please plant your trees today (in a pot if you can't locate them in the ground). Keep watered as needed and protect from DEER.

I will post here immediately when the oaks are all gone.

Muddy Branch Alliance has native perennials available at their sale if you want additional smaller plants to augment your trees/shrubs.

Thank you to our dedicated team of volunteers at the Darnestown site: Jeff, Merikay, Susan, Laura, and Dara.

The Seneca State Park site event starts in about 10 minutes, at 5:30 pm. Special thanks to Bonnie Bell and her team of volunteers as well.

03/24/2026

Here's the list of free native trees/shrubs that will be available this Thursday. Each household can take up to 10 trees. Two locations: 14909 Spring Meadows Drive, Darnestown (4:30 pm) or Seneca State Park (5:30 pm). Both sites will have the same stock.

Pawpaw (Asimina triloba)
A shrub or small tree that tolerates shade, pawpaw produces a fruit that is readily eaten by wildlife and humans. It has a height 15 to 30 feet, a spread of 15 to 30 feet, and prefers full sun to part shade and moist fertile soils. Often spreads by root suckers to form colonies or thickets.

American hazelnut (Corylus americana)
This fast growing, nut producing, multi-stemmed shrub can reach heights of 8 to 15 feet with a spread usually slightly greater than the height. Hazelnut prefers full sun to partial shade and well-drained loamy soil. Fruit matures in September, is edible, and benefits turkey, deer and other wildlife. This Maryland native displays a copper-red color in the fall.

American beautyberry (Callicarpa americana)
This native shrub quickly grows 5 to 8 feet tall and almost as wide with drooping branches. It prefers moist well drained soils and will tolerate light shade but is intolerant of deep shade. Clusters of purple berries that form on the stems in the fall are an important food source for more than forty species of songbirds.

Buttonbush (Cephalanthus occidentalis)
A deciduous shrub that grows only on wet sites, buttonbush is usually 3 to 12 feet tall with a spread of 4 to 8 feet. The seed is consumed by small birds and ducks. Buttonbush must be planted at the water's edge. Prefers full sun to partial shade.

Witch-Hazel (Hamamelis virginiana)
This slow growing shrub grows best in sun or partial shade, but will tolerate shadier conditions. It grows 20 to 30 feet tall and spreads 15 to 25 feet forming a multi-stemmed, shrubby, round, somewhat asymmetrical ball. It prefers to grow in light, moist soils, but tolerates some clay and some drought. It produces interesting yellow flowers mid to late fall.

Virginia pine (Pinus virginiana)
This scrubby North American native tree is most often found growing in the poorest sites and will easily adapt to most soil conditions, except alkaline soils. It prefers to be grown in full sun on well-drained, loamy soil. Capable of reaching up to 70 feet in height, Virginia Pine is more often seen from 20 to 40 feet in height with a 20 to 35-foot spread. Tolerant of a wide variety of soil types, this pine grows on soil too dry, rocky or clayey for most other plants, particularly pines, but prefers acidic pH. It is useful as a reclamation tree due to the ability to seed itself in and tolerance to poor, dry soil.

Southern red oak (Quercus falcata) – not powerline compatible
Grows 60 to 90 feet tall with a spread of 40 to 50 feet on moist, well drained soils. It is valued for timber, fuelwood, and wildlife food and cover. Commonly found in the eastern and southern parts of the state. Full sun but will tolerate some shade. Tolerates drought and air pollution. Reddish brown color in late fall.

Pin oak (Quercus palustris) – not powerline compatible
Typically reaches 70 to 90 feet tall, but can grow as high as 120 feet and spreads to 40 feet. Is fast growing for an oak. Leaves turn a deep scarlet red in the fall. This tree does best on wet, acidic, poorly drained sites, but gets out-competed by other species on better quality sites. Prefers full sun, but is partial shade tolerant in youth. Acorns eaten by various mammals.

White oak (Quercus alba)
White oak may grow 80 to 100 feet and is valued for timber, fuelwood and wildlife food and cover. It prefers moist well drained soils. Maryland native.

Southern Arrowwood (Viburnum dentatum)
A multi stemmed shrub, growing 6-10 feet tall and wide producing dark blue berries that attract many birds. This native is adaptable to many soil conditions from dry to fairly wet and prefers partial shade or full sun.


Seedling Storage and Care

Store your seedlings in a refrigerator (NOT a freezer) or a cold, dark place until you are ready to plant. Keep the roots moist. Do not put them in a bucket of water for more than 1 hour; this will kill most of them. Do not keep trees outside of cold storage for longer than 1 week. The sooner you plant them the better the odds of survival.

Keep seedlings covered and out of the wind and sun while planting. Keep the roots moist at all times, but do not put them in a bucket of water for more than 1 hour. If the roots dry out, your tree is now likely dead. This can happen in a matter of minutes.

Limpieza 8.a Anual de Kelley ParkSabado, Abril 4, 202610 am – 12 pmReúnase en el puente peatonal en Kelley Park, 400 Vic...
03/17/2026

Limpieza 8.a Anual de Kelley Park
Sabado, Abril 4, 2026
10 am – 12 pm

Reúnase en el puente peatonal en Kelley Park, 400 Victory Farm Drive. Use pantalones largos, camisas de manga larga y zapatos cerrados o botas impermeables. Se proporcionarán recolectores de basura, guantes y bolsas. Recogeremos la basura en la tierra, en el arroyo y en el humedal.

¡Este es un evento familiar y todas las edades son bienvenidas! Los niños pequeños deben ir acompañados de un adulto. Las horas de SSL están disponibles.

El arroyo en Kelley Park es un afluente de Whetstone Run que desemboca en el lago Whetstone, luego en Great Seneca Creek, el río Potomac, la bahía de Chesapeake y el océano Atlántico. Los plásticos en particular son contaminantes persistentes que pueden viajar miles de millas en el océano y son letales para los animales que los confunden con comida.

Gracias por ayudarnos a mantener nuestros parques y vias fluviales,
limpios y hermosos!

More information / mas informacion:

Seneca Creek Watershed Partners [email protected]
City of Gaithersburg 301-258-6370, [email protected]

IT’S SPRING CLEANING TIME! 8th Annual Kelley Park CleanupSaturday, April 4, 202610 am – 12 pmMeet at the pedestrian brid...
03/17/2026

IT’S SPRING CLEANING TIME! 8th Annual Kelley Park Cleanup
Saturday, April 4, 2026
10 am – 12 pm

Meet at the pedestrian bridge at Kelley Park, 400 Victory Farm Drive. Wear long pants, long sleeved shirts, and closed-toe shoes or waterproof boots. Trash grabbers, gloves and bags will be provided. We will pick up trash on land, in the stream, and in the wetland.

This is a family-friendly event and all ages are welcome! Young children must be accompanied by an adult. SSL hours are available.

The stream in Kelley Park is a tributary of Whetstone Run that flows into Whetstone Lake, then to Great Seneca Creek, Potomac River, Chesapeake Bay, and the Atlantic Ocean. Plastics in particular are persistent pollutants that can travel thousands of miles in the ocean, and are lethal to animals who mistake it for food.

Thanks for helping to keep our parks and waterways
clean and beautiful!

~~~~~~~~~~~~

FREE Native Trees: We will have 450 - 500 native bare-root trees and shrubs available again this spring.  Because of the...
03/04/2026

FREE Native Trees: We will have 450 - 500 native bare-root trees and shrubs available again this spring. Because of the extreme cold they are likely to arrive a few weeks later than usual (likely in April rather than end of March).

Keep checking back here for details. Let Merikay know if you'd like to help as a volunteer during the Tree Give-Away. We generally need about 6 volunteers between the two locations (Darnestown and Seneca State Park).

2026 Native Trees for Give-Away:
pawpaw
serviceberry
spicebush
southern arrowwood
beautyberry
buttonbush
hazelnut
witchhazel
Southern red oak
white oak
willow oak
pin oak
Virginia pine

Each household can take up to 10 trees but we may limit the number of the smaller species so as to allow more people access.

Ask questions of native plant experts at this free event next Saturday, Feb. 28 at 3 pm. Registration link in photo belo...
02/26/2026

Ask questions of native plant experts at this free event next Saturday, Feb. 28 at 3 pm. Registration link in photo below.

Come join our friends at C&O Canal Trust on February 7, 10-12 at Rileys Lock for an invasive plant removalRegister here:...
01/25/2026

Come join our friends at C&O Canal Trust on February 7, 10-12 at Rileys Lock for an invasive plant removal

Register here:

We hope you can join us for a day of invasive species removal projects at Rileys Lock on Saturday, February 7! We will be removing invasive vegetation to help protect the park’s natural resources and support our local ecosystem. Learn more and register here.

01/24/2026

Interested in helping keep our watershed? Collecting salt levels after a snowfall helps us know how healthy the water is. If you have a salt watch kit, don't forget to grab a reading when it's safe to do so after the snow.

If you're just getting started, request your kit from Izaak Walton League of America Salt Watch

W**d Warriors needed!We will be working Saturday November 15 and Tuesday November 18 at historic Black Rock Mill on Sene...
11/12/2025

W**d Warriors needed!

We will be working Saturday November 15 and Tuesday November 18 at historic Black Rock Mill on Seneca Creek in Seneca Creek State Park. There are numerous big trees and a very cool rock outcrop along the trail... all infested with english ivy!

The site is near the Seneca Ridge and Seneca Greenway trails. We will work 10 am-12 noon both days.

New volunteers are welcome, although please note this is not a formal training. Wear long pants, long-sleeve shirts, sturdy shoes or boots, gloves and a hat. We will provide tools.

Meet us at the trailhead parking lot: https://maps.app.goo.gl/4W4VfER17aprAaAy5

Please carpool as parking is very limited.

Find local businesses, view maps and get driving directions in Google Maps.

Address

13015 Rileys Lock Rd
Poolesville, MD
20837

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