Take an ax to it
Over the summer, I’m so busy fussing with my garden that a lot escapes me. But by the end of August, when I have quit stressing about all the chores, I take some time just to hang out in it. Perfectionist that I am, it doesn't take me long to start seeing stuff that bothers me...like overgrown plants eating up all the space in the garden.
Step 3: Take a slice out of the outer edge of the plant and dig around that part of the plant. Use your shovel to lift the plant out of the ground. It usually comes right out in the size you cut.
Voila you're all done (hopefully,not done in)!