The Lingering Hemlock Project aims to support resistance breeding in hemlock trees for long-term control against hemlock woolly adelgid (HWA).

This project is a subset of Tree Species in Peril, a The Nature Conservancy project to further development of pest-resistant native northeastern tree species at risk from invasive pests. The Lingering Hemlock Project focuses specifically on locating and breeding resistant hemlock trees.

Hemlocks are important trees in eastern North America, creating unique forest conditions because of their densely branching twigs and roots. Many have already been lost to HWA and other pests, but there is still hope to save them.

The Lingering Hemlock Project is a coalition of academic institutions, government agencies, and nonprofit organizations. Each partner in the coalition plays a different role in the development of HWA-resistant hemlock trees, an ambitious but promising goal. Use the buttons below to learn more about this project.

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