Easiest way to kill it all (I hate to say and I understand this method may not apply to a single, although awesome, mom) is a machete and some horrid chemical.
Going easy on the horror involving chemicals is to use a PH attack against the invaders. That might mean vinegar or lye type things, but identifying the invasive plant is FIRST. You have to know what you are fighting.
BUT, fucking plant a tree already. Make it a double!
Well whatever that bush was, it's now stakes holding up a new tree.
(I know I know. Still gotta do all the rest of it.)
The tree just barely fit into the car. Thankfully. I don't have access to a truck.... whyyyyy does everything take social skills.
Couldn't figure out the Juniper thing yet... looking at what they had, I'm not even sure what I want is a Juniper. Maybe. So I ended up getting a bush sized Amur maple. Which is small enough I stand a better shot at dealing with it. And had the advantage of also fitting in the car.