I had this "horizontal" arborvitaes in the front yard of the house I just moved into. I wanted to replace them with flowers.
I tried to unroot them but the roots go down just too deep and after hours shoveling I ended up cutting the last roots (to remove the trunk).
The roots were cut ~1 foot under soil level.
If I cover the roots and start planting flowers, will the trees grow back from the roots in a few years (and damage the flowers above)? Will I have to redo it all over again?
I thought of pouring some poison but I don't want to "pollute" the place for everything new I will plant.
Note: I read Tree growing back after being cut down and some other questions but I felt that this was dependent on the type of the tree so I'm asking