Invasive Species: Drooping Sedge

Carex pendula

Drooping sedge was introduced as an ornamental, but it is a little too adapted to western Oregon.

Why is it important to control?

This species can produce up to 20,000 seeds and in ideal conditions 90% can germinate. It thrives in fertile moist soils such as our riparian areas. It is reported to be nearly impossible to eradicate from lawns.

How can you identify it?

Close up image of drooping sedge leavesImage of multiple drooping sedge fruiting spikes
Habitat: Moist, fertile soils from full to partial shade.
Life Cycle: Perennial
Height: 3-6 ft
Leaf Description: Wide, evergreen leaves emerging from large clumps
Fruit & Flower Description: Long, drooping spikes
Bloom Time: March to May

How do you control it?

  • Physically remove plants and roots. Will require monitoring and follow up.

  • Herbicides can assist in regrowth and new seedlings.

  • It will take repeated effort over several years to eradicate.

  • The Oregon Department of Agriculture does not list this as a noxious weed, but is on the watch list.

How to report it?

There are various ways you can report this noxious weed.

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