Community Science

The New York State Hemlock Initiative represents the efforts of scientists, natural resources professionals, and New York residents united in their love for hemlock trees and dedication to hemlock conservation. Since our scope is statewide, we are supported by community scientists all over New York who help us find HWA-infested hemlock stands, assess tree health, and understand the timing of important HWA life stages.

Help us collect field data

Our community science project participants help us complete HWA surveys, assess tree health, track HWA phenology, and survey hemlock stands along shorelines. Data collected from these efforts help us understand how and where HWA is spreading in our forests, identify biocontrol release sites, and time biocontrol releases. Your contributions improve our research efforts and help us work towards our goal of landscape-scale HWA management through biological control. Find out more by checking out our programs below.

 If you have any questions about NYSHI’s community science programs, please reach out to Charlotte Malmborg at

Find Your Program

HWA Hunters provide data about HWA presence/absence, density, and overall hemlock health in a given area. Help us fill in critical survey gaps, detect emerging HWA infestations, and identify new biocontrol areas.

MyHemlock participants survey the same site two times per year, giving us data on HWA infestations and hemlock tree health over the course of a season and over the long term. Choose your site and get started today.

HWA Phenology volunteers help us track the timing of HWA’s major life stages throughout the year. We use these data to time biocontrol releases and gain a deeper understanding of HWA behavior in New York. Check out the HWA Phenology Project page to learn more.

HWA Boat Surveys

Boaters, paddlers, and anglers can help survey for HWA from the water by examining tree health along shorelines. Help us detect unknown infestations and identify areas for further surveying by reporting the hemlock damage you see on shore.