Accotink Gorge Workdays

The Accotink Gorge, an imperiled biological gem and the call to action to defend it.
March 16, 2018, Accotink Gorge Wisteria Workday
Snow flurries dropped a few scattered and quickly melting flakes as we gathered, accompanied by blustery chill winds. Once we descended into the gorge, however, the air was still and comfortably cool.

Our team fanned out, attacking vines large and small with loppers and saws. Herbicide applicators followed close behind, treating each stump to prevent resprouting. Chinese wisteria is notorious for responding to cutting by sprouting multiple new stems, much like the Hydra of Greek mythology.

And just as slaying the Hydra was one of the twelve labors of Heracles, clearing Chinese wisteria from the Accotink Gorge will be a Herculean task. Continued effort over a period of years will be needed, followed by monitoring and mopping up indefinitely. We have only begun.


Team Accotink saws through a huge Chinese wisteria vine

October 10, 2017, Accotink Gorge Wisteria Workday
The day was rather warm, with temperatures in the 80's, but the humidity was remarkably high and uncomfortable. Still we persevered. Four volunteers did the vine cutting, while three professionals of SOLitude Lake Management provided the support of qualified herbicide application.

The cutters moved from vine to vine, lopping and sawing, while the applicators followed behind, giving an immediate squirt of glyphosate to each fresh stump. Over a period of weeks, the herbicide will be drawn down deep into the roots, permanently ending each wisteria vine's hostile attack on the flora of the gorge. Vines ranged in size from mere seedlings to well-established monsters four and five inches in diameter, climbing into the canopy.

We worked in two groups. One group focused its efforts on "The Headland", the place here where Accotink Creek is joined by a small tributary from the north that has been identified as the most in danger of losing its uncommon flora to the advancing vines. The second group moved across the creek on a precarious log to eradicate the larger vines there that might spread their seeds to the Headland. Only one voluneer fell in, and only up to the knee.


Anti-wisteria team after their afternoon of vine cutting

August, 2017 - Wisteria management begins in the transmission right-of-way

Movement against wisteria in the Accotink Gorge by Dominion Energy, which has commenced mowing beneath the power lines, to be followed by future targeted spraying of resprouting wisteria. Mowing is not an adequate description for this work, as the machines grind everything to dust right down to the ground. All the native perennials may be expected to readily rebound by next spring.


Dominion Energy machines at work in the Accotink Gorge

December 2016 - Encroaching development or preservation for the Accotink Gorge?
A 10.4 parcel of private land including a portion of the lower end of the gorge is on the market. How great it would be to find a way to preserve this land, which borders park lands and includes a stretch of the creek. Any angels with deep pockets out there? Real estate listing information


Our October 15, 2016 Wisteria Workday:

A small band of FACC volunteers, taking on invasive Chinese wisteria vines in a targeted area, and getting a lot done! Wisteria poses a significant threat to the existing native forests and meadows in Accotink Gorge - its abundant growth smothers and stifles native plants, competing for resources and reducing available habitat.

Wisteria vines spiral up tree trunks, burdening trees. Over time the vines constrict around the growing trunks, compromising the trees’ health, and leaving obvious grooves when removed. In many cases the vines look like taut ropes anchoring the tree to the ground, and can be several inches thick - too wide for loppers to cut. But we also had pruning saws!

We clipped as many vertical vines as we could, reducing the burden on the trees and providing a temporary setback to the wisteria's ambitions of dominance. However it is nearly impossible to completely eradicate wisteria this way - there are long networks of roots stretched across the forest floor that will continue producing vines, requiring a professional invasive management strategy.

FACC is leading invasive workdays and awareness walks in the Accotink Gorge in order to build public awareness and engagement on this important issue, while building our capacity and effectiveness as a team of volunteers - this is a very ambitious project for us, and the scale of the challenge can be overwhelming. But as shown this weekend, a few people can make a meaningful difference with a few hours work!

We are working on an agreement with the Fairfax County Park Authority that will allow us to engage more directly on this issue, and we appreciate their willingness to work with us. We also welcome partners and volunteers to work with us on this campaign to Save Accotink Gorge!


Our April 26th, 2016 Wisteria Workday:
A small scale trial run against Chinese wisteria took place on the "Headland", the part of the gorge identified as the best place to halt the advance of the alien vines before they overtake this zone especially rich in uncommon native plant species.

The steep slope here presents an obstacle to effective action. Volunteers found it challenging to maintain their footing while simultaneously accessing the vines. The perils included avoiding treading on the very plant species we are trying to protect, and sliding downhill, leaving areas bared to future erosion. It seems only the most cautious and concerned volunteers should be selected to work this particular spot.

Two methods of control were employed - pulling up small seedlings by the root and clipping off established vines near the ground. Future efforts, if they are to be effective long-term, will need to incorporate licensed herbicide application to stumps.

The effort against the beast that is Chinese wisteria conjured up images of characters in Greek mythology - Heracles battling the Hydra or Laocoon set upon by giant serpents.

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Our October 24th, 2015 Wisteria Workday: Something of a non-event, with no cutting (due to permitting delays), no naturalist guides (due to health issues), and few of the most exceptional native plants at their seasonal best.

Nonetheless, a number of stalwart volunteers did show up and went on three treks into the gorge - to the critical highland, to the meadow habitat under the power lines, and upstream to the "Great Falls" of the Accotink. We were impressed, however, by a small display of Purple passionflower fruits. It unfortunately paled in comparison to the uncountable thousands of Chinese wisteria seedpods to be seen.

Unable to attack the Wisteria, our volunteers went into cleanup mode, removing bag after bag of thoughtlessly discarded trash. Among the trash was a fresh illegal tire dump, which we labored to haul up the slopes out of the gorge.


The Accotink Gorge, an imperiled biological gem and the call to action to defend it.