Forum Topic

  1. Alliaria petiolata

  2. 3/10/2016 3:26:09 p.m. Jenny
    (Non-member from Auckland)

    Hi there,,

    Does anyone know whether this plant is considered as a noxious weed and whether I should get rid of them?

    Thanks,
    Jenny

  3. 3/10/2016 3:34:06 p.m. Astrid van Meeuwen-Dijkgraaf

    HI Jenny, it certainly is seen as a noxious weed in the US and causes issues over there - I wouldn't think that it behaves that differently here in NZ. "Alliaria petiolata is an aggressive invader of wooded areas throughout the eastern and middle United States. A high shade tolerance allows this plant to invade high quality, mature woodlands, where it can form dense stands. These stands not only shade out native understory flora but also produce allelopathic compounds that inhibit seed germination of other species" - it is not listed as an unwanted organism on the MPI site
    http://www.invasive.org/browse/subinfo.cfm?sub=3005

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