Land Plants - invasive

Italian Arum (Arum italicum) on Apr 4, 2024

Submitter has sample
EDRR Status: Local expert notified

Description of specimen

Dense patches of Arum 4x4 & 2x2 in lawn just off Metro property boundary. Also patches of Bugloss in lawn spreading into Metro Natural Area

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

Found on Metro property at boundary of neighboring property. Infestation dense on neighbors property in lawn and behind shop. Both Arum & Bugloss found

Expert Reviewer

Samuel Leininger
Clackamas Soil and Water Conservation District
4-County Cooperative Weed Management Area
Columbia Gorge Cooperative Weed Management Area

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