Invasive Aroid
Shmuel Silinsky via pbs (Tue, 08 Jun 2021 13:09:40 PDT)

Actually, clear plastic is best. Solarization let's the sun through and the
plastic traps the heat. A killer greenhouse effect. Water well, put on the
plastic, and you get par boiled weeds. Non-toxic too.
Shmuel Silinsky
Jerusalem, Israel

On Tue, May 11, 2021, 8:12 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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