Invasive Aroid

Mark Mazer via pbs pbs@lists.pacificbulbsociety.net
Tue, 11 May 2021 10:57:12 PDT
" maybe something works on Pinellia" Triclopyr applied in the early Fall.
It will take several seasons.

Mark Mazer
Hertford, NC

On Tue, May 11, 2021 at 1:12 PM Robert Parks via pbs <
pbs@lists.pacificbulbsociety.net> wrote:

> Multipart process...much like eliminating Oxalis pes-caprae.
>
> Remove as much of the tuber mass as possible. In one yard with sandy soil,
> I actually sifted the soil to remove smaller bulbs of Oxalis.
>
> Exhaust the tubers. Mow/weed leaves, Apply herbicide to fresh growing
> leaves/cut stems...maybe something works on Pinellia. Water and fertilize
> at the beginning of the growth period, then cover with black plastic: no
> light for phtosynthesis, and possible cooking on sunny days, keep watered
> and fertilized to encourage growth in the dark.
>
> Eventually can revert to eternal vigilance whenever a leaf shows.
>
> Robert
>
> On Tue, May 11, 2021 at 9:24 AM Robert Lauf via pbs <
> pbs@lists.pacificbulbsociety.net> wrote:
>
> > Some years ago, I was hybridizing Pinellia tripartita and bought a
> > presumed natural hybrid, Pinellia 'Polly Spout, which was billed as
> sterile
> > so it doesn't volunteer.  Tragically, my plant failed to read the
> marketing
> > literature and has now taken over part of my yard and clearly intends to
> > take over the neighborhood.  It seems to be impervious to multiple
> > applications of Roundup.  I called the Air National Guard to see if I
> could
> > request an air strike with some Agent Orange, but they balked (OK that
> was
> > a joke).  Digging is a fool's errand because bulblets can break off and
> pop
> > up later.
> > If anyone knows how to eradicate this horrible weed, I'm all ears.
> > Bob  E Tenn
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