Land Plants - invasive

Italian Arum (Arum italicum) on Jan 12, 2026

Submitter does not have a specimen
EDRR Status: Local expert notified

Description of specimen

At least three patches of Italian arum, from 1 foot to 3 feet diameter clumps.

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

North side of access road and trail entering the park from the Borwick St entrance, about 50 feet away from the park map kiosk.

Expert Reviewer

Avatar of Reviewer

Coleman Hepner
Tualatin SWCD

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