Re: CULT: leaf spot?

 Hi humidity I think is the main cause of leaf spot spreading. Rain =
humidity.  Putting a layer of sand might help. If you put a layer every time
you plant it will not be long until you have soil that is too sandy.
Removing it every time would be a big chore. I used the sand to help frost
heave for two years in a row. I still had some leaf spot the next year. I
put it on in late summer. My raised beds drain too fast now.

Mike Greenfield
SW Ohio Zone 5b

From: "Judy Hunt"



> Linda Mann said:
> <Does anybody know if there are nutritional
>  deficiencies associated with plant vigor that are directly related to
>  resisting leaf spot?  These rows are more sandy than the main gravelly
>  beds.>
>
> Linda, I don't know about nutritional deficiencies, but from experience
have
> found that clumps in beds with lots of weeds seem to be much more
resistant
> to leaf spot than those in "clean" beds.  The soil is not splashed on them
> from rain storms. For the past two or three years, we have talked about
> putting a "mulch" of very coarse, gravelly sand on all our bearded beds.
> Maybe this will be the year we get it done!  We think that might help in
> much the same way that the weeds do.  Anyone else have experience with
that?
>
> Judy Hunt in Louisville, KY, Zone 6
>
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