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Fungus Infected Leaves

Square Foot Gardening List - http://www.flinet.com/~gallus/sqft.html

A fungicide will not kill mildew or any other fungal disease.  The premise
of a fungicide is to coat plant materials with a substance that either acts
as a barrier to fungus spore or has a pH that kills fungus spores.  Once
spores have attached and grown mature organs such as hypae, there is nothing
you can do.  The best thing is to destroy an infected plant materials and
coat what is left with a fungicide.
Reapply every 10 days or after every substantial rain.
Doreen Howard
Zone 5b, Central Illinois, where fungus was outlawed this year by the George
Ryan Illinois First bill.
-----Original Message-----
From: Kim Kiernan <kkiernan@home.com>
To: JJLipe@aol.com <JJLipe@aol.com>
Cc: sqft@listbot.com <sqft@listbot.com>
Date: Saturday, June 26, 1999 5:54 PM
Subject: Re: Summer squash problems


>Square Foot Gardening List - http://www.flinet.com/~gallus/sqft.html
>
>Try Neem oil (called Rose Defense in the nursery or they have one that
>is identical, but called Fruit & Vegetable spray by the same company).
>The Neem oil spray should knock out the mildew or at least keep it from
>getting worse. As an added benefit, this spray also controls most "bad"
>insects while keeping the good.  Just don't spray it when bees are
>active, as if the spray lands on them it will kill them.  Also, mix it
>with warm water so it will emulsify properly.
>
>Another option is an ultrafine horticultural oil spray.  This is also
>organic and is supposed to control powdery mildew as well.
>
>I wonder if you should remove the infected leaves and destroy them or if
>the spray will kill the mildew and save the leaves.  Does anyone else
>know?
>
>kim, so cal, zone 9b
>
>JJLipe@aol.com wrote:
>>
>> Square Foot Gardening List - http://www.flinet.com/~gallus/sqft.html
>>
>> My yellow and zucchini squash have been a total disaster here in Zone 8,
NW
>> Louisiana.  Has anyone else had problems?  I planted both transplants and
>> seeds and both have had a terrible time with powdery mildew.  I haven't
been
>> able to find any way to treat this and all plants are slowly dying.  We
have
>> had an unusually wet spring, could this be the reason?  Thanks for any
help.
>>
>> Juliana
>> Zone 8 NW Louisiana
>>
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