Re: sulfate of potash for meyer lemons



David Poole wrote:


> >potassium already in the local soil, so the need for boosting it
> >artificially should eventually disappear.
>
>  I also grow about 20 species
> of palms and these benefit greatly from increased potash during our
> winters since many Butia, Brahea, Syagurus etc.continue to grow
> slowly.  I balance this with a couple of applications of Magnesium
> sulphate (Epsom Salts) in spring to prevent the characteristic leaf
> yellowing that can occur on acidic soils.
>

For the uninformed, what is sulfate of potash?  Potash being potassium?  So
is this potassium sulfate?  This is something Ihave not seen (labeld as such)
in garden stores.
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