Disposal Methods

Invasive plant disposal methods

Proper disposal of removed invasive plant material is critical to the control process. Leftover plant material can cause new infestations. In general, remove flowers, seeds, and fruits before they ripen, and place them in heavy black garbage bags 4 mil or thicker to prevent re-sprouting. On some plants, flowers can mature and set seed even after the plant has been pulled.

Some disposal methods include:

  • Burn—Make a brush pile and burn the material following local safety regulations and restrictions, or haul it to your town’s landfill and place it in their burn pile.
  • Burning should only be done with a burn permit from the fire department during the burning season.
  • Pile—Make a pile of the woody debris. Cover the pile with a tarp held down with rocks. Periodically check the contents for signs of resprouting.
  • Compost—Place all your herbaceous invasive plant debris in a pile reserved for invasive plants and process as compost. Monitor the pile for resprouts and remove as necessary. Do not use the resulting compost in your garden.
  • Dry—Place woody debris on your driveway or any asphalt surface and let it dry out for a month. Place herbaceous material in a doubled-up black trash bag and let dry in the sun for one month. At the end of the month, the material should be non-viable and can be disposed of in the trash.

Note that the following plants can sprout vigorously from plant fragments:

  • Oriental bittersweet
  • Multiflora rose
  • Japanese honeysuckle
  • Phragmites
  • Japanese knotweed

These plants should ideally be burned or dried prior to disposal.

More Information

 University of Connecticut (UConn) publications:  http://cipwg.uconn.edu/cipwg-publications/