Q.Can Escallonia Be Planted In Planters?
Our septic drainfield is in our front yard. We want to plant escallonia for a hedge, but don’t know if it’s a safe plant for around septic/drainfield. So, we are considering (8)large planters to create a hedge. Unless the root system will not affect the septic/drainfield.

Certified GKH Gardening Expert
I think that this choice would suit the area, just fine! This shrub has a shallow root system that will not harm the septic system. You could grow them, in ground, or in container if you wish.
Here is an article that will help you to care for this, easygoing, shrub:
https://www.gardeningknowhow.com/edible/fruits/tangerine/mandarin-orange-tree-care.htm