Invasive Vegetation Control

The Five Rivers MetroParks park system, located in Montgomery County, Ohio, encompasses 15,475 acres, including public parks and non-public conservation areas. Five Rivers MetroParks provide the Dayton, Ohio, metropolitan area with miles of bikeways, hiking trails, camping, fishing and educational opportunities while maintaining a healthy environment for wildlife and rare and endangered plants to take refuge. 

Since 2008, Davey has helped Five Rivers MetroParks manage multiple aggressive invasive plant species including Elaeagnus umbellata (autumn olive), a variety of Lonicera spp. (honeysuckle), and Ranuculus Ficaria (lesser celandine). Davey has been contracted year after year to manage invasive vegetation in over 900 acres throughout seven parks, including high-use public park spaces and diverse conservation areas. 

Due to the size of the park system, each treatment area required a custom approach depending on the area's target species density, ecosystem sensitivity, accessibility, public occupancy, and other site conditions. The site variables dictate how Davey biologists go about achieving a successful mortality rate in a safe, low impact, and cost-effective manner. It was very important to use the right tool for the job. 

Davey utilized a variety of chemical control measures and techniques including high-volume foliar spray, low-volumes precision foliar spray, and basil bark treatment. Davey was able to achieve this range of control by having the appropriate equipment, such as full-size spray rigs for easily accessible, high-density areas, specialized hand-held basal bark sprayers,  and amphibious all-terrain spray units to navigate areas thought to be only accessible by foot. In addition to having the best means of approach, Davey properly timed each application to have a low impact on desirable native species. 

Over the course of the past five years, Davey continually met or exceeded the target mortality rate of 95% within the contracted treatment area. Minimizing the impact with invasive and non-native vegetation has allowed the natural reas to thrive and contribute to the surrounding ecosystems. Through communication and teamwork, Davey is able to continually deliver a superior environmental restoration service for Five Rivers Metroparks.