Community Profile

Pledge Status

Active

Pledge Date

Monday, March 16, 2026

Program Year

2026

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Action Item Report

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City of Portland

Portland, ME

Mark Dion

Mayor

Pledge Summary

The City of Portland is Maine's largest city with a population of just under 70,000. It is located on the shore of Casco Bay with strong historical and cultural connections to the sea. Portland has committed to preserve and protect natural resources and water quality as demonstrated by a prohibition on the use of synthetic pesticides and fertilizers, the establishment of numerous urban meadows sown with native plants, and development standards that emphasize natural landscapes over pavement. Mayor Dion is committed to ensuring that the City continues its stewardship of the natural environment and taking measures to support native pollinators such as the Monarch Butterfly.

Community Spotlight

Action Items Committed for 2026

Communications and Convening ▸

Engage with gardening leaders and partners (e.g., Master Naturalists, Master Gardeners, Nature Centers, Native Plant Society Chapters , other long-standing and influential community leaders) to support monarch butterfly conservation.

Program and Demonstration Gardens ▸

Plant milkweed and pollinator-friendly native nectar plants along roadsides, medians, or public rights-of-way.
Add or maintain native milkweed and nectar-producing plants in gardens in the community.
Launch, expand, or continue an invasive species removal program that will support the re-establishment of native habitat for monarch butterflies and other pollinators.

Systems Change ▸

Reduce or eliminate the use of herbicides, pesticides, or other chemicals that are harmful to monarchs and pollinators and urban wildlife.

Past Pledge Archive

Mayor Name	Program Year	Pledge Date	Achievement
Mayor Mark Dion	2026	3/16/2026		View Pledge