RE: Clopralid (Alligare)
iris@hort.net
  • Subject: RE: Clopralid (Alligare)
  • From: &* <s*@frontiernet.net>
  • Date: Fri, 31 May 2013 13:12:34 -0700
I tried clear plastic and left it for the summer, but it did not kill much
of anything.  Maybe our nights are too cool?  It was after this that I tried
Roundup without the desired result.  I just read in a magazine at the market
:) how many of these common herbicides  leave soil residue for as many as 5
years.  The article was actually talking about the dangers of using horse
manure if the animals had been fed seed-free, "horse quality" hay.  It said
that the residue from the chemicals can go right through the compost pile
and kill your plants.  I had never thought of that risk.

Colleen in NE Calif.

-----Original Message-----
From: owner-iris@hort.net [o*@hort.net] On Behalf Of J.
Griffin Crump
Sent: Friday, May 31, 2013 10:29 AM
To: iris@hort.net
Subject: Re: [iris] Clopralid (Alligare)

Black plastic won't kill mugwort.  I speak from experience, just having
finished applying Roundup to mugwort that sprang up after several months of
black plastic coverage.  --  Griff

-----Original Message-----
From: Colleen
Sent: Thursday, May 30, 2013 10:37 PM
To: iris@hort.net
Subject: RE: [iris] Clopralid (Alligare)

If you don't mind multiple applications, vinegar works very well, even on
very difficult weeks such as White Top.  The roots depend on the above
ground plant for food, if you spray the plants with vinegar you are
depriving the roots of their food source.  As I said, it may take a few
applications, but it really does work.  Where I had areas of only "weeds" I
just took a jug of vinegar and sloshed it about.  Many plants, thought of as
weeds, especially grasses, like an alkaline soil and by adding vinegar, the
soil will become more acidic thereby making the growing environment less
friendly.

Colleen in NE Calif.

-----Original Message-----
From: owner-iris@hort.net [o*@hort.net] On Behalf Of Linda
Mann
Sent: Thursday, May 30, 2013 3:27 AM
To: iris@hort.net
Subject: Re: [iris] Clopralid (Alligare)

Yes, Dan, there is/may be an issue with bees with all this poison.  This is
my first year to use any of these chemicals (other than Roundup), but the
bees have been long gone.  :-(  Not just honeybees, but all pollinators are
a lot scarcer here than years ago.  Lots of diversity in what's left - all
sizes and shapes, mostly various bumble beeish looking things, but also
various wasps and little bitty unidentifiables.

Shaub, have you tried black plastic to kill mugwort or Rumex?  If I abandon
this section of row, I think I'll try it rather than repeated spraying.

Lambsquarters is a totally different story.  I wouldn't want to get rid of
it entirely - too good to eat!  Tho a bit of a nuisance to strip off the
leaves.

Sheep sorrel is tasty too, but a tiny bit of it goes a long way!

Linda Mann east TN USA zone 7b

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