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Invasive non-native poisonous plant? #927722

Asked April 07, 2026, 12:18 PM EDT

This plant is spreading in Sligo Creek Park. I would like an identification, if possible.

Montgomery County Maryland

Expert Response

Hello and thank you for your question. Yes, the plant in your image is a non-native invasive plant called Italian Arum.

https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=y760

Answered by a Master Gardener with the Home and Garden Information Center (HGIC), University of Maryland Extension. For timely gardening information and tips, subscribe to our Maryland Grows blog and quarterly newsletter. Follow us on Facebook, Instagram, and YouTube. Replied April 07, 2026, 3:53 PM EDT

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