These metal pipes are meant to withstand some tree root pressure. Ceramic sewer lines on older properties are far more subject to tree root problems. You should check with your gas supplier. Emerald Queen is a cultivar of Norway maple, normally a shallow-rooted species, especially in Colorado's clay soils. As a general rule, roots do not develop deeply in Front Range clay soils because there is insufficient oxygen (pore space). Roots can develop more deeply where excavation loosens soils.
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Will the roots or pressure from a five-year-old Emerald Queen maple cause trouble if they are directly above natural gas pipes leading into the house? I live in Colorado.
Last Updated: November 15, 2011
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