Re: JI Fertilizer Conflict
- Subject: Re: [iris-talk] JI Fertilizer Conflict
- From: N* Z*
- Date: Sat, 7 Oct 2000 08:22:04 -0500
On Sat, 07 Oct 2000, you wrote:
> There is a question that has me puzzled. Authorities typically warn iris
> gardeners that lime and/or Calcium are fatal to Japanese Iris (JI).
Is it Calcium or Calcium Carbonate [chalk] that is the problem?
Calcium Carbonate buffers acidity. Making it very hard to lower the Ph.
Calcium Sulfate [I think that's gypsum] doesn't. It can lower Ph.
The other thing is unless you are watering with distilled water
then you are adding calcium to some extent. Our tap water is high in
temporary hardness much of it calcium carbonate. Not to mention what is
naturally in what we call soil.
Nick
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Anybody got plans for an ark?
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