While both types of pampas grass (Cortaderia selloana and Cortaderia jubata) are beautiful, they also have negative effects on native vegetation in areas where they are planted. Both types of pampas grass can self-propagate without the need for pollination, and are very prolific seed-bearers. Add into this the fact that they choke out native plants and have sharp leaves that can seriously injure humans and animals and the danger is clear. Ridding yourself of a pampas grass infestation is possible, but it is time-consuming.
Wear your long-sleeved shirt tucked into your gardening gloves, jeans, boots, and high socks to avoid the risk of injury from sharp pampas grass leaves while you are working.
Dig up or pull smaller pampas grass clusters from the ground. Make sure to get all their roots. Do not put them on the ground. Put them in the plastic bag.
Attach a choker cable to the bases of larger pampas grass plants and use a winch to ease them up out of the ground. If the cable slips, dig up a little more of the base, reattach the cable with a better grip, and try again.
Dispose of all pampas grass plants in the plastic garbage bag in your garbage. If your area has a disposal system for yard waste, do not use it. Pampas grass can grow almost anywhere, and will grow if given the chance. If you put these plants out at the curb with your other yard waste, you will merely be moving the problem elsewhere.