Re: gypsum as bindweed killer was: bindweed was: Odd reference to potatoes
- To: perennials@mallorn.com
- Subject: Re: gypsum as bindweed killer was: bindweed was: Odd reference to potatoes
- From: m* l*
- Date: Wed, 02 Feb 2000 08:29:56 -0700
At 02:27 AM 2/2/2000 -0500, you wrote:
>Interesting theory, Margaret. But, if it is true, think it must have
>something to do with the chemical reaction to the particular type of
>soil in your area, as it's sold around here to loosen clay soil and
>is not supposed to have any detrimental effects on plants at all. If
>it were good at eradicating bindweed under any soil conditions, I
>should imagine that major plus would be touted to the skies by the
>manufacturers:-)
>
>Marge Talt, zone 7 Maryland
>mtalt@clark.net
>Editor: Gardening in Shade
>current article :What's in a Name? Taxonomy
>http://suite101.com/welcome.cfm/222
>All garden topics welcome page:
>http://suite101.com/category.cfm/gardening
>
That's the way it's sold here, too. Years ago I used it, then stopped
because someone told me it raised the pH, and ours was already over 7.0.
After this fellow told me about his experience, I learned that it does have
some sulfur in it, and that should neutralize any rise in pH. But imagine
the caliche hardpan under the surface, nutrients (including the sulfur)
falling to that level and concentrating there, along with the roots of the
bindweed...do folks in acid soil territory have bindweed? Thanks, Margaret
L
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