Re: Arum italicum as an invasive weed? ID and advice needed.


not much help, marge, but confirmation that one person's accent plant is 
another's invasive weed. the pond apple, which is native to the everglades, 
has been declared a noxious weed in northern australia; likewise the 
austrailian pine has been declared a noxious weed in the everglades. i 
suspect this sort of thing happens with greater frequency than we realize.

At 09:32 AM 3/26/01 -0600, Marge Talt wrote:
>Hi all,
>
>I received email from a gardener in Oregon who had read my article on
>Arum italicum and wrote saying that it had become a weed on her farm,
>invading the garden and herb beds.  Since my one clump has not
>expanded all that much in years and doesn't set seed regularly, I
>replied wondering whether she could have another plant - and sent
>links to various Arum images on the web.
>
>She responded with two images of her problem plant, which I have put
>up on the web at:
>
>http://mtalt.hort.net/arum-tmp/arum-as-weed.html
>
>It sure looks like Arum italicum to me, but I've never read anything
>about this becoming an invasive weed.  Out of my depth here, so I
>turn to all you Aroid gurus to help me help this person out.
>
>Would you-all be so kind as to look at the images and let me know
>whether this looks like it actually is Arum italicum.  If not, what
>is it?  And, further is there any action that can be taken to curb
>it, other than removing seed heads?  She says it's spreading
>everywhere and the tubers are very deep; she's tried digging them
>out, but finds she's just cutting off stems below ground.  She says
>there are too many to really be able to dig them out (if it is A.
>italicum, I should be so lucky as to have this problem!).  She also
>says they have tried "various methods" of eradication with no
>luck...I am assuming some kind of herbicide, but do not know exactly
>what methods she has tried.
>
>Any assistance will be much appreciated.
>
>Marge
>
>Marge Talt, zone 7 Maryland
>mtalt@clark.net
>Editor:  Gardening in Shade
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