[MAIPC] Italian Arum

[Judy Fulton]

Johnny,

I agree with Jil that the screen frame is a great idea. What size mesh 
do you recommend for Ficaria verna and what size for Arum italicum? You 
should go into business -- I would definitely buy one of each from you.

BTW, I was just trying to convince a neighbor on Saturday to get rid of 
the A. italicum she'd planted on her property, but she didn't want to 
hear what I was saying. She said it was filling a bare slope that was 
eroding. And, she's even helped with a native plant symposium for ~30 
years, and noted that it was spreading to another person's yard. In 
addition, I had just warned another neighbor in February about the 
Italian arum that his landscaper had planted for him in 2020. I'm 
wondering whether this difficult-to-eradicate invasive is becoming 
increasingly popular.

Judy

____________________________________________

Judith P. Fulton
EcoPlant Consulting: Native and Invasive Plants
Master Gardener, University of Maryland Extension
Chair, Maryland Invasive Species Council's Committee on Invasives Lists
Board, Mid-Atlantic Invasive Plant Council
Voice: 410-337-3701, Text only: 410-404-8201

On 3/1/2021 9:31 AM, Jil Swearingen wrote:
> Johnny,
>
> That's a great idea! Tell us more about the size of the mesh screen 
> you've found to work best for filtering out the tubers.
>
> Jil
>
> On Mon, Mar 1, 2021 at 8:53 AM Randall, Johnny <jrandall at email.unc.edu 
> <mailto:jrandall at email.unc.edu>> wrote:
>
>     Ruth: Jil is unfortunately correct! We haven’t found a herbicide
>     treatment that works very well.
>
>     I recommend building a screening frame with the proper hardware
>     cloth dimension for trapping tubers, but allowing soil to sift
>     through. (I’m building some of these now for Ficaria verna
>     diggings….) The only thing you’re putting in the trash is
>     vegetation and not heavy soil.
>
>     Johnny
>
>     *From:* MAIPC <maipc-bounces at lists.maipc.org
>     <mailto:maipc-bounces at lists.maipc.org>> *On Behalf Of *Jil Swearingen
>     *Sent:* Monday, March 1, 2021 8:43 AM
>     *To:* Ruth Douglas <cvilleruth at gmail.com
>     <mailto:cvilleruth at gmail.com>>
>     *Cc:* MAIPC Listserve <MAIPC at lists.maipc.org
>     <mailto:MAIPC at lists.maipc.org>>
>     *Subject:* Re: [MAIPC] Italian Arum
>
>     Ruth,
>
>     That plant is a monster. Italian arum is or was at the national
>     arboretum (that's where I first got to know it about a decade
>     ago). It's very hard to get rid of. It's best to dig plants up -
>     you have to get ALL the underground tubers and bag and dispose of
>     the material in a landfill. You could leave it in the bags for a
>     while to let it rot before disposal. It would be best to remove
>     most of the soil in the area where the plants are, if that's a
>     possibility. That would help ensure removal of all tubers.
>
>     Here's a good fact sheet from the State of Washington.
>
>     https://www.nwcb.wa.gov/weeds/italian-arum
>     <https://www.nwcb.wa.gov/weeds/italian-arum>
>
>     Thanks,
>
>     Jil
>
>     On Mon, Mar 1, 2021 at 8:33 AM Ruth Douglas <cvilleruth at gmail.com
>     <mailto:cvilleruth at gmail.com>> wrote:
>
>         Help! A well-meaning person or persons planted Italian arum
>         (Arum italicum) an unknown number of years ago at my church,
>         and it's been spreading. I've seen the Maryland info on this
>         plant (http://mdinvasives.org/iotm/nov-2015/
>         <http://mdinvasives.org/iotm/nov-2015/>) and  it's
>         discouraging about how to get rid of it.
>
>         However, no mention is made of tarping or laying black plastic
>         on areas where it is spreading. Has anyone tried this, and if
>         so, with what success? I know its underground structures can
>         be fairly deep, but does that preclude use of this technique?
>
>         Any advice is welcome.
>
>         Thanks.
>
>         Ruth Douglas
>
>         Charlottesville, VA
>
>         _______________________________________________
>         MAIPC mailing list
>         MAIPC at lists.maipc.org <mailto:MAIPC at lists.maipc.org>
>         http://lists.maipc.org/listinfo.cgi/maipc-maipc.org
>         <http://lists.maipc.org/listinfo.cgi/maipc-maipc.org>
>
>
> _______________________________________________
> MAIPC mailing list
> MAIPC at lists.maipc.org
> http://lists.maipc.org/listinfo.cgi/maipc-maipc.org
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.maipc.org/pipermail/maipc-maipc.org/attachments/20210301/c62e6374/attachment-0001.html>