The NY State Hemlock initiative is seeking hemlock hedges, infested with HWA or not. Outside NY State? Add your hedge to our inaturalist project! Hedge is now a suggested entry in the hemlock abundance field.
"Hedges made of hemlock trees with thriving populations of HWA are prime candidates for biocontrol. Why? Because predators are easier to catch on a hedge, making it easier to monitor predator establishment and to collect them in order to introduce them in other locations."