Hi K,

It is invasive here in the SF Bay Area of California with a little summer
water.

If you can completely starve them with no water, that will be the end of
them.

If that is not possible, then I suggest digging.

Cheers,
Bracey
San Jose CA

-----Original Message-----
From: pbs-bounces@lists.ibiblio.org [mailto:pbs-bounces@lists.ibiblio.org]
On Behalf Of Kathleen Sayce
Sent: Tuesday, April 22, 2014 6:24 PM
To: pbs@lists.ibiblio.org
Subject: [pbs] Arum italicum

Working on a wetland mitigation site last week, I found three patches and
two seedlings of Arum italicum. My question to the PBS members in temperate
climates is this: How invasive is this species? It's listed as invasive in
the state of Oregon, which is 25 miles to the south, and it's in a natural
area that is supposed to be left alone. I suspect it needs to come out,
though that may be difficult, given the likelihood of deeply rooted corms.