What is the origin of the idiom "roots and all" and when to use it?

The idiom "roots and all" comes from the idea of pulling up a plant or weed completely, including its roots. It signifies thoroughness and completeness, as when you remove a plant "roots and all," you ensure that no part of it is left behind. This phrase is often used to emphasize that something is complete and thorough, with every detail considered or accounted for. It suggests that nothing has been omitted or left unfinished.