Invasive Plant Surveys

Invasive Tree Survey: Norway Maple & Ailanthus

We trained over 50 volunteers to recognize, measure and document Norway maple, in green below, and ailanthus trees, shown in orange. Volunteers recorded over 1600 trees, and those are just the ones within 50 feet of a trail or road!

This data and the marks on these invasive trees will help Parks & Rec Department identify and remove smaller trees, and will help produce an RFP for any tree work that requires a commercial tree team. Invasive trees further than 50 feet from human traffic will be girdled. This allows them to die back slowly, and provide food an habitat for woodland creatures.

Read more about Norway maple and ailanthus trees in Hillside Woods by Róisín O'Flaherty

Invasive Tree Removals

Parks & Rec has focused on removing invasive trees in the area near our proposed demo exclosure. The HWRP continues to engage volunteers in removing invasive shrubs, primarily privet, jetbead and honeysuckle, among other invasives, and will begin addressing Japanese barberry shrubs in the spring of 2021.

Japanese Barberry Survey

Volunteers surveyed Japanese barberry in August-September of 2020 and found over 850 shrubs. Barberry tends to colonize entire understories of area preserves if not forcibly removed, and such infestations create a favorable microclime for deer tick reproduction. Join the Barberry Busters!

Japanese Angelica Survey

This highly invasive, thorny, and pesky tree has gotten a strong foothold in several areas of the woods. We will begin a survey for Japanese angelica in the winter of 2021.