Somerville’s Strategy for Public Plantings

The City of Somerville Parks & Open Space and Urban Forestry (UF) divisions consider many factors when developing urban spaces. We prohibit the use of invasive plants and would like your help removing them. There are many factors that go into choosing the right plant for the right space, including but not limited to: the challenges of urban conditions, management of urban plantings, the need to consider and plan for climate change, and the desire to achieve a balanced approach while encouraging plant diversity and resilience.

  • Unwanted Plant Guide

  • More Information

Somerville's Most
UN-Wanted Plants

Click here for a printable PDF.

Please note: This list was compiled to assist non-gardeners/volunteers who are working within City-led work days in identifying non-intentional plants in our parks. It is not comprehensive, nor is it a value judgment about which plants are weeds or not, or their ecological value. 

Black swallow wort



Field Bindweed

Green Foxtail

Japanese Knotweed

Pennsylvania Smartweed

Quack Grass

Sow Thistle

Canada Thistle

Common Burdock


Garlic Mustard


Norway Maple Seedling

Purple Clover

Shepherd's Purse

Annual Fleabane