Re: copperas/Acidifying soil (was Re: Microsoft alert (Humor))
- To: i*@rt66.com
- Subject: Re: copperas/Acidifying soil (was Re: Microsoft alert (Humor))
- From: "* F* J* <j*@mail.stlukes.org>
- Date: Thu, 26 Sep 1996 22:06:43 -0500
- References: <199609261901.OAA02626@magic.mpd.tandem.com>
Amy Rupp wrote:
> NB: aluminum (aluminium for you Canadians) sulfate is a less expensive
> but less "nutritious" form of sulfate.
> --
> Amy Moseley Rupp
> amyr@mpd.tandem.com, Austin, TX, zone 8b
> Jill O. *Trades
> Mistress O. {}
Aluminum Sulfate will acidify quicker and drop the pH farther than
sulfur or ferrous sulfate (Copperas). It is an amphoteric compound (for
you chemists). Unfortunately as the pH drops, elemental aluminum
becomes available to the plant. Aluminum is toxic to plants and will
kill them.
The Ensata Garden boys told me not to use it on the Japanese Iris.
That's probably why it's cheaper than Copperas.
--
=========================================
Mike Jones (jonesmic@mail.stlukes.org)
Sioux City, Iowa http://www.siouxlan.com/
U.S.A. USDA Zone 4b
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The Loess Hills
"Where IA, NE, & SD Meet"
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