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RE: Interesting Black spot treatment

Patricia and list,
I'm wondering then. I have a 2 year old rose
that is a cutting off my great grandmother's
grave and it has yet to have powdery mildew.
But cuttings from that same grave rose,  
(mother's and aunt's, 6 and 8 years old roses) 
and "mother bush" herself, is dreadful with 
powdery mildew right after blooming. 
Should I begin the "baking soda spraying" now ?
(just as she's beginning to bloom) 
Or wait till I see the stuff and then go for it ? 
How often should I spray ?

Carleen
----------
> From: Patricia H. 
> This may be true for black spot, but baking soda works wonders on powdery
> mildew -- knocks it right out.   I don't bother with the soap or the
> horticultural oil though.  Just 2 T baking soda per gallon of water.
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