Stop Invasive Plants From Taking Over Your Garden

How to keep spreading plants under control.

Control aggressive plants that have spreading root systems with a simple plastic container.

By the DIY experts of The Family Handyman Magazine

Problem: Invasive plants

If you love lilies and black-eyed Susans, but hate the way they're taking over your garden and choking out other plants, here's what you can do:
Many plants multiply by dropping seeds and by sending out roots that establish new plants. A layer of mulch will prevent the seeds from taking root. But to stop those aggressive roots, you need a solid barrier. Replant the spreading plants inside underground “corrals.” The plastic corrals should extend at least 10 in. below ground to prevent the roots from sneaking under them. This trick won't work with plants such as strawberries or mint that spread above ground.

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Required Tools for this Project

Have the necessary tools for this DIY project lined up before you start—you’ll save time and frustration.

  • Utility knife
  • Spade

Required Materials for this Project

Avoid last-minute shopping trips by having all your materials ready ahead of time. Here's a list.

  • Plastic pot, 10-in. deep min.