Our science and stewardship mission is to conserve our region’s biodiversity, while creating an environment for exceptional educational opportunities.

Biodiversity is the variety of life on earth, including plants, animals and microorganisms.

To keep our ecosystems healthy, we must commit to supporting the plants, animals, and other organisms that call them home.

Our preserve’s greatest threats

  • Overpopulated deer

    threaten the future of our forests

  • Invasive Species

    displace native populations of plants and animals

  • Chemical runoff

    alters wetland ecosystems and quickens lake fill-in

  • Climate change

    shifts natural cycles on both global and local scales

Learn more

Habitat protection & restoration

Learn more about what we do to improve the quality of our habitats to support biodiversity.

Wildlife management

Discover how our research is used to maintain wildlife and protect the future of our forests.

Research & Monitoring

At Teatown, our science research influences our stewardship work.

Regional Collaboration

We understand that partnership is key to a sustainable future. Learn more about our partnerships with local organizations.


Peak Season: Trail Maintenance in 2020

Peak Season: Trail Maintenance in 2020

Monarchs appear in Teatown’s fields to lay their eggs on the underside of milkweed leaves. The caterpillars remain there, busily munching away until they crawl off to undergo pupation inside a gold-speckled chrysalis. Hence, no milkweed, no monarchs! Life is rough for an organism whose life cycle is so tied to one plant for its survival. As the sole host plant for monarch caterpillars, the relationship between milkweed and monarchs is crucial.