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From: Orange, CT
Region: Northeast
Topic: Trees
Title: Fast-growing evergreen tree to hide power lines
Answered by: Nan Hampton
Chamaecyparis thyoides (Atlantic white cedar) 40 to 75 feet with medium growth rate
Ilex opaca (American holly) 25 to 65 feet, but slow-growing
Juniperus virginiana (eastern redcedar) 30 to 90 feet with moderate growth rate
Pinus strobus (eastern white pine) to more than 100 feet with fast growth
Picea glauca (white spruce) up to 100 feet and medium growth rate, photos from Vanderbilt University
Pinus resinosa (red pine) up to 100 feet and medium growth rate, photos from Vanderbilt University
Pinus rigida (pitch pine) up to 100 feet, medium growth rate, photos from Duke University
Picea rubens (red spruce) up to 100 feet, slow to medium growth, photos from Virginia Tech
Tsuga canadensis (eastern hemlock) up to 100 feet, slow to medium growth rate
You will need to check the "Growing Conditions" area on each species home page to see if they meet the conditions at your site. I don't know how close the trees will be to the power lines, but you need to keep in mind that power companies usually have the right to trim trees away from their lines if they are perceived to pose a threat to the lines, so plant the trees so that there is plenty of room between them and the power lines.
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