Powdery Mildew/Azalea?

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Powdery Mildew/Azalea?

Post by nghthw » Thu, 01 Mar 2001 14:44:11



Hi, any suggestions (non-commercial) for treating A.indica for powdery
mildew? I'm afraid to try the baking soda on an acid loving plant. Yes, I've
misted a little too religiously...:-o
Tana
 
 
 

Powdery Mildew/Azalea?

Post by Stephen M. Hennin » Fri, 02 Mar 2001 00:34:24


Quote:

>Hi, any suggestions (non-commercial) for treating A.indica for powdery
>mildew? I'm afraid to try the baking soda on an acid loving plant. Yes, I've
>misted a little too religiously...:-o

A grayish white, powdery coating is powdery mildew. This is more
prevalent on deciduous azaleas and sometimes it affects the lower
surface more. Many fungicides are labeled for powdery mildew and should
provide control.  This fungal disease can weaken the plant and can
be controlled with Funginex or Daconil. Spray when you first see the
disease and then again in 10 days.  Chemicals will not control the fungi
that has already become established.

An excellent web site on powdery mildew is posted by the Alabama
Extension Service:

http://www.aces.edu/department/extcomm/publications/anr/anr-407/anr-4...
tml

or the Ohio Extension Service:

http://www2.ag.ohio-state.edu/~ohioline/hyg-fact/3000/3047.html

or Washington State Extension Service:

http://cru32.cahe.wsu.edu/column/10-01-00.htm

--

Visit my Rhododendron and Azalea web pages at:
www.users.fast.net/~shenning/rhody.html
Also visit the Rhododendron and Azalea Bookstore at:
members.aol.com/rhodyman/rhodybooks.html

Cheers Steve Henning at:
www.users.fast.net/~shenning

 
 
 

Powdery Mildew/Azalea?

Post by nghthw » Fri, 02 Mar 2001 05:54:14


Thanks for the great website info but my problem is not *what* it is or how
it occurred, but what kind of home made solution can be used on an acid
loving plant like azalea. I use baking soda on my Lilac and on my old
fashioned Zinnias with much success. I'll keep searching the websites,
Thanks for the reply,
Tana



Quote:

> >Hi, any suggestions (non-commercial) for treating A.indica for powdery
> >mildew? I'm afraid to try the baking soda on an acid loving plant. Yes,
I've
> >misted a little too religiously...:-o

> A grayish white, powdery coating is powdery mildew. This is more
> prevalent on deciduous azaleas and sometimes it affects the lower
> surface more. Many fungicides are labeled for powdery mildew and should
> provide control.  This fungal disease can weaken the plant and can
> be controlled with Funginex or Daconil. Spray when you first see the
> disease and then again in 10 days.  Chemicals will not control the fungi
> that has already become established.

> An excellent web site on powdery mildew is posted by the Alabama
> Extension Service:

> http://www.aces.edu/department/extcomm/publications/anr/anr-407/anr-4...
> tml

> or the Ohio Extension Service:

> http://www2.ag.ohio-state.edu/~ohioline/hyg-fact/3000/3047.html

> or Washington State Extension Service:

> http://cru32.cahe.wsu.edu/column/10-01-00.htm

> --

> Visit my Rhododendron and Azalea web pages at:
> www.users.fast.net/~shenning/rhody.html
> Also visit the Rhododendron and Azalea Bookstore at:
> members.aol.com/rhodyman/rhodybooks.html

> Cheers Steve Henning at:
> www.users.fast.net/~shenning

 
 
 

Powdery Mildew/Azalea?

Post by Stephen M. Hennin » Fri, 02 Mar 2001 13:13:10


Quote:

>Thanks for the great website info but my problem is not *what* it is or how
>it occurred, but what kind of home made solution can be used on an acid
>loving plant like azalea. I use baking soda on my Lilac and on my old
>fashioned Zinnias with much success.

The only organic technique I have heard for acid loving plants is
prevention or digging the plant and treating by dipping.  Azaleas are
easy to dig.  They have shallow roots and can easily be dug and dipped
in the baking soda solution.  It would be necessary to make sure that
there was no run off onto the soil and root area.  No only is the
alkalinity bad for the azaleas, but the sodium is bad.  Acid loving
plants are sodium sensitive.  Sodium bicarbonate contains sodium.

--

Visit my Rhododendron and Azalea web pages at:
www.users.fast.net/~shenning/rhody.html
Also visit the Rhododendron and Azalea Bookstore at:
members.aol.com/rhodyman/rhodybooks.html

Cheers Steve Henning at:
www.users.fast.net/~shenning