Land Plants - invasive

Italian Arum (Arum italicum) on Sep 16, 2025

Submitter does not have a specimen

Description of specimen

See photo.

Commentary

None

Remedy

Italian arum can be difficult to eradicate once established. Make sure to wear gloves and long sleeves and pants when removing it, as its sap can cause skin irritation. Do not compost or put in your yard debris, as this can lead to spreading of tubers which can grow into new plants. Home control methods can include carefully digging out the tuber and any daughter tubers and disposing in the trash. Cutting and disposing of the berries in the trash can help prevent spreading to new sites. Herbicide trials are still inconclusive, please contact your local Soil and Water Conservation District if you are interested in chemical control.

Resources

Washington State Noxious Weed Board info on Italian Arum

Location

The plant is located in a low lying swale just off Brooklane Drive and Marys River Natural Area in Corvallis. The area is a city designated watershed corridor of dense and shaded under-growth. During much of the winter the swale is underwater.

Expert Reviewer

Cierra Dawson
Benton Soil and Water Conservation District

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