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Hemlock Woolly Adelgid Survey Results

Thank you for helping to control the spread of hemlock woolly adelgid. Please submit one report for each location surveyed.

Decimal longitude and latitude is preferred, such as gps coordinates or obtained online from Please list address if coordinates are not available.


please provide your best estimate

If the owner does not want the infestation reported, please reassure them there will be no further follow-up unless they request it. Please encourage them to contact Mark Whitmore at with any questions.


(For example, 8-16 inches DBH)

(0=none, 1=light, 2=medium, 3=heavy)

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