Arborvitae have more of a shallow, surface root system. One source I read noted that no kind of tree should be planted directly over a septic field, and suggested that 30 - 60' away from the septic tank was likely acceptable for arborvitae. However, I suggest you consult a professional in the plumbing field to see what kinds of trees they have most trouble with in your area. This article has some more information about these plants, which I hope will help you make your decision: https://www.gardeningknowhow.com/ornamental/trees/arborvitae/growing-arborvitae-trees.htm
Answered on October 15, 2014
Was this answer useful?00
Looking for more?
here are more questions about...Arborvitae