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Re: ZONES


Ken,

Southern Blight is caused by a soil born fungus that is common everywhere
(not just in the South.  You did not get it from buying southern grown
Hosta).  Hosta get Southern Blight because of weather conditions and stress
to the plant (most soils have the fungus).  High temperature, high humidity,
and wet conditions help increase infections.  It is generally more prevalent
in the south because it is hotter here in the summer and we have a longer
growing season.  However, I have never seen the fungus, but we do not grow
many Hosta in the ground.  I have seen both of the crown rots that Mary
mentions.  The 'dry rot' she refers to makes a plant impossible to culture
and appears to be caused by a red bacterium.  The soft rots are probably
fungal in nature.

Jim Anderson


-----Original Message-----
From: Marekmohr@aol.com <Marekmohr@aol.com>
To: hosta-open@mallorn.com <hosta-open@mallorn.com>
Date: Thursday, August 12, 1999 1:16 PM
Subject: Re: ZONES


>In a message dated 8/12/99 12:56:56 PM Eastern Daylight Time,
>sussextreeinc@ce.net writes:
>
><<
> Hosta + Southern Blight Spores + three days above 95f with high humidity
> or rain = southern blight. >>
>
>DAN.......BASED ON WHEN YOU CLAIMED SPRING WAS THERE...ARE YOU
>CONSIDERED...."IN THE SOUTH"....I SEEM TO RECALL AN 18 ....oops.....inch
>snowstorm around the time you said the pips were up"???
>
>
>how do the spores move around the garden.....???
>
>why is the attack sporadic around the garden.....???
>
>does min. temps have an impact on reduction of the pathogen....can they
>winter over.....???  or are they reduced by the cold in the north.....can
too
>much mulch and heavy snow cover actually preserve the spores over the
>winter.....
>
>WHY IS THIS A REGIONAL PHENOM.???  thats the part the is bugging me right
>now....it seems prevalent in the south, and sporadic in the
north....WHY????
>
>thx....ken
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