We recently moved into a home that used to have a privacy border of arborvitae that recently died due to a 'beetle' infestation (all the info we got from the neighbor when we asked). The infestation is still killing arborvitae in neighboring yards. We would like to replant some trees (preferable evergreen, but we are flexible) as a privacy border along the same fence line that would be able to maintain around a 15-20 foot height and a fairly narrow base (our yard is small but we are fine with regular pruning). I am worried about planting something that might get re-infested with whatever beetle infestation still appears to be in the area. I am hoping someone might have recommendations for us of a tree to plant along our fence line that might be far enough removed genetically from arborvitae that we might have hope of them not getting infested. (Other info: Trees will be planted along 6ft tall fence so they don't need to have branches down low, and the area is mostly sunny and fairly well drained)
Thank you!