[permaculture] Controlling crab grass

Kenneth Benway ken at arcadiandesign.org
Fri Jun 15 13:51:56 EDT 2007


Tom, 
In Fl we have a serious problem with torpedo grass. It has turned huge
bio- diverse native wetlands into monoculture wastelands. When you read
"Weeds:Control Without Poisons" did you see anything that might help us
here with torpedo grass? If so I will order the book ASAP.
Thanks, Ken

-----Original Message-----
From: permaculture-bounces at lists.ibiblio.org
[mailto:permaculture-bounces at lists.ibiblio.org] On Behalf Of Tom Golodik
Sent: Friday, June 15, 2007 12:22 PM
To: permaculture
Subject: Re: [permaculture] Controlling crab grass

According to Charles Walters, in the second edition of his book "Weeds: 
Control Without Poisons," the presence of crabgrass indicates soil low
in 
calcium that cannot support molds that begin the decay process.  He
suggests 
calcium lime and sulphur or gypsum to adjust pH.  Effects will be seen 
quickly.  I recommend the book highly.

Cheers,
Tom Golodik
Closter, NJ


----- Original Message ----- 
From: "Dieter Brand" <diebrand at yahoo.com>
To: <permaculture at lists.ibiblio.org>
Sent: Thursday, June 14, 2007 10:38 AM
Subject: [permaculture] Controlling crab grass


Hi,

  I'm not sure if the term "crab grass" is used in the US. Anyway, it is
  the kind of grass that propagates by whitish rhizomes underground,
  by runners on the surface and by seeds. It is extremely invasive
during
  the summer and goes dormant during the winter.

  Whenever I dig out some of this grass from my vegetable garden I'm
  astonished by the quality of the soil which seems to be far superior
in
  places with crab grass than in places without. I always regret having
  to disturb the soil and thereby destroying its structure in addition
to
  removing the organic matter of the grass itself.

  Hence I wonder, is there any way of controlling crab grass, for
example
  by crowding out or by means of allelophatic properties? Or better
still,
  are there any crops that can compete with crab grass during the
  summer, which would allow me to leave the grass in the soil?

  Dieter Brand
  Portugal


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