[NAFEX] sources potassium or magnesium?

road's end farm organic101 at linkny.com
Sun Jul 9 19:26:15 EDT 2006


On Jun 27, 2006, at 8:53 AM, Thomas Olenio wrote:

>
> Hello,
>
> What are good, available natural sources of potassium

I'm not a soil scientist, but here are some possibilities: greensand; 
granite meal; kelp; wood ash (if you also want to raise pH; also be 
sure wood ash is not from sources contaminated with heavy metals, etc.)

>  and magnesium for
> plants/trees?
>
Some types of limestone are high magnesium. Again, this will also raise 
your pH, of course.

Sul-Po-Mag is high in both and I think is still considered permissible.


--Rivka
Finger Lakes NY; zone 5 mostly
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