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Re: bermudagrass wars

> what's up w/ blue clay?

Well, if I can explain this correctly.....Clay gets its color from the
minerals within it. The red clay that several have mentioned is red because
of the iron deposits.  The iron is red because it is oxidized.  It's
oxidized because of the air that has been in its pores over the eons.  Blue
clay has iron that has not oxidized.  It has been deprived of oxygen.  This
occurs because the pores are very small and/or they have been continuously
filled with water - again, over eons.  Plants need good pore spaces, large
and small in any kind of soil, with oxgen available.  Areas under water for
too long - even if that were 1000s of years ago - have blue clay if they
contain iron.  Not a good soil for much of anything.

If I didn't get that quite right, feel free to correct me.
----- Original Message ----- 
From: "Pamela J. Evans" <gardenqueen@gbronline.com>
To: <gardenchat@hort.net>
Sent: Tuesday, September 02, 2003 9:46 PM
Subject: Re: [CHAT] bermudagrass wars

> Clay does retain moisture it's true. And if you amend the bejeebers out
> of it - you can plant darn near anything. My great big xeriscape herb
> bed - I excavated down about 18", left half the clay, used the rest for
> a berm. Added some compost, about 8 or ten bags of lava sand and 3 or 4
> of greensand and the lavenders, rosemary, artemisia, salvia and thyme
> seem quite happy. I also top dress it twice a year w/ lava sand to keep
> it from "regressing".
> So you can do a lot w/ it.  Great graphic Kitty -
> hadn't seen that one before...
> what's up w/ blue clay?  I think Andrea has that.
> ---------- Original Message ----------------------------------
> From: "Kitty" <kmrsy@comcast.net>
> Reply-To: gardenchat@hort.net
> Date:  Tue, 2 Sep 2003 18:34:09 -0500
> >Well, I was just guessing.  Actually clay gets a bad rap.  It's not
> >that bad.  When someone says they have no clay - that's really not that
> >good.  If you take a look at a soil pyramid
> >http://www.columbia.edu/itc/cerc/seeu/atlantic/images/Soil_pyramid.jpg
> >clay plays a part in more than half the area.  Clay helps to retain
> >and improves cation exchange.  As regards the texture of the soil:
> >"Texture refers to the composition of the strata according to the USDA
> >pyramid, which classifies soils based on percentages of sand, clay and
> >A loam has roughly equal amounts of sand, silt and clay. A clayey silt is
> >predominantly silt with some clay, but may also contain sand, etc."
> >So if you have a nice loam soil, you do indeed have some clay.  The clay
> >reaaly don't want is blue.
> >
> >Kitty
> >
> >
> >----- Original Message ----- 
> >From: <Cersgarden@aol.com>
> >To: <gardenchat@hort.net>
> >Sent: Tuesday, September 02, 2003 5:14 PM
> >Subject: Re: [CHAT] bermudagrass wars
> >
> >
> >> In a message dated 9/2/03 1:15:46 AM, mhobertm@excite.com writes:
> >>
> >> << Hmmm....I bet clay soil would have done a better job of
> >> holding on to that
> >> tree. :+) >>
> >>
> >> Kitty, our tornado of 98' didn't recognize the fact our soils were
> >We
> >> lost 9 trees in our garden, several of those uprooted but the home
> >us
> >> had an enormous ugly cottonwood and it was pulled up by the roots also.
> >>     Ceres
> >>
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> >
> >---------------------------------------------------------------------
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> >
> >
> --
> Pam Evans
> Kemp TX/zone 8A
> --
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