Work events
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Pine Ridge Park
Tue, August 15, 2023, 5:00 – 8:15 pm
Description
We will spray with glyphosate herbicide Japanese and Giant knotweed that is beginning to establish along Tom's Run. Knotweed has thick roots and rhizomes that can extend 6 feet deep and 60 feet horizontally. It is not feasible to eliminate it by mechanical methods. Some biological treatments are starting to show an impact on knotweed, but in many of the trials, the treatments are not able to effectively curb knotweed. Chemical treatments are effective; but of course, they cause some collateral damage. We will try to minimize that collateral damage by using the minimum effective dosage and trying to target just the knotweed leaves.
Our protocol is a two-step process. We cut the knotweed to the ground in June. At least six weeks later we return and spray the resprouted knotweed, which will only be one or two feet tall, with glyphosate herbicide. That late in the growing season, the plants' nutrients will be flowing back into its roots. The herbicide will be drawn into the knotweed roots and will kill the plants.
Plant Patrol will supply all of the necessary equipment and supplies. Bring your own drinking water and snacks, if you wish. Wear a long sleeved shirt, long pants, and closed shoes. If you have a favorite pair of safety glasses or chemical-resistant glove, you can bring them. Otherwise, we will supply safety glasses and chemical-resistant gloves.
Meet at the parking lot by Pavilion 3.
If rain or winds are predicted, then we will reschedule this event for another evening. Contact volunteers@plantpatrol.org if you have any questions or if you wish to volunteer without registering on the Web site.
Visit this location's web site: Pine Ridge Park