Hello, I have 3 emerald cedar trees planted beside of my house for 7' tall, and 1.5' apart from the house foundation. I want to know how far of their root spread? Will the roots hurt the foundation when mature?
The roots spread can be pretty far, but won't hurt the foundation at all. They are gentle roots. I have 15 in front of my house, mature trees.....pretty big, tall as well.... they are pretty and good trees. We planted them 8 years ago.
8 years is not nearly long enough to have mature examples. I have driven by a grower's field in Oregon where the 'Smaragd' were as tall as the 'Fastigiata'. A 'Fastigiata' in Toppenish, WA was determined to be 38' tall with a trunk 11'1" around, and an average crown spread of 23' during 1993.