Powdery mildew and blight


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I read it is good to spray tomatoes, zucs, and cucumbers with a baking soda solution every two weeks as a preventative measure against powdery mildew and blight every two week. I am wondering when I should start this? I planted my seedlings about three weeks ago. Are they too young to start spraying?
 
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I wouldn't spray anything on my plants unless i had too, most especially anything i eat.
 
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I read it is good to spray tomatoes, zucs, and cucumbers with a baking soda solution every two weeks as a preventative measure against powdery mildew and blight every two week. I am wondering when I should start this? I planted my seedlings about three weeks ago. Are they too young to start spraying?
It would be better to use Neem Oil, here is why. Powdery mildew is really easy to control. So many other disease vectors exist that prevention efforts for insect borne bacteria and viruses as well as other fungal attacks become the actual task where powdery mildew prevention is folded into the effort such that the garden dows not work you to death chasing separate unique issues.
 
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I read it is good to spray tomatoes, zucs, and cucumbers with a baking soda solution every two weeks as a preventative measure against powdery mildew and blight every two week. I am wondering when I should start this? I planted my seedlings about three weeks ago. Are they too young to start spraying?
If your area is wet and stays that way very long I would spray the baking soda. I doubt if it will do anything for blight but it will effect the growth of mildew.
 
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I have had powdered mildew a few years. I tried all the nostrums to no avail. One years no tomatoes or cucumbers. If I get it bad I simply give up and consider the year a write-off. Only occurs here if the Summer is very wet and relatively cold, which is rare.
 
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