How to Kill a Dill Herb Plant

Dill (Anethum graveolens) is a culinary herb grown in many gardens. It is very distinctive, with green umbels and fern-like foliage. Dill self-seeds readily, which can make it problematic when grown without containment. Like when growing mint, you must take great care to choose an area to grow dill where it cannot escape confinement. When dill does escape, there are many options for killing it, depending on where the dill is growing and what is planted nearby.

Leaves or mulch
Lawn mower
Dark plastic or newspaper
Herbicide

Instructions

- 1
  Dig small stands of dill by hand with a hand spade. Remove all of each plant, including the long taproot, so that the plant cannot return. Burn the plant material to destroy any ripe seeds. Mulch the area with 6 inches of leaves or mulch to smother any remaining seeds.
- 2
  Destroy larger areas of dill by mowing the stand close to the ground just before seeds form. Cover the area with dark plastic or a thick layer of wet newspaper. Check regularly to ensure that the plants have been killed. Leave the area covered until the following spring, renewing the newspaper or plastic if necessary.
- 3
  Spray a standalone clump of dill with a nonselective postemergence herbicide such as glyphosate. Apply the herbicide to the leaves once the dill plants are actively growing. Cover any ornamental plants that might be accidentally sprayed with herbicides, because they will damage any plant they fall upon.

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