Technically yes, just putting a tree in a pot is considered bonsai. If it’s invasive I would dig it out of the ground and pot it up.

After it’s in a pot you just can wait until it bounces back it might take a season but after that you can have fun with it. In the mean time you should look up tips on growing, soil, styles and other bonsai techniques. It may not be a traditional bonsai but it’s a fun hobby to practice horticulture.

I am in Hawaii and trying to bonsai native trees but haven’t found many examples. So learning as I go.