Q.mature spruce trees
Hi! We are looking to dig a basement for our home close to 40+ ft (45 year old trees). We don’t want to hurt the trees so were wondering how far away we should keep the excavation? The diameter of the trunk 4.5 ft up from the ground is 15″.
Thank you for your help!
Most Spruce Trees roots are more shallow and will extent beyond the size of the canopy.
You can search for the specific root structure of the type of Spruce that you have in your digging site.
Here are some links that will help you.
http://www.treetec.net.au/TPZ_SRZ_DBH_calculator.php
http://www.extension.umn.edu/garden/landscaping/implement/protecting_trees.html