Flower Gardens

Baking Soda

  1. Cottage_Garden

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1.   May 9, 2006 9:16 AM

» Cottage_Garden - Mildew and blackspot on roses

The ARS (American Rose Society) web site reports that a slightly WEAKER concentration applied preventively every 7 to 10 days seems to control mildew and blackspot on roses.

They suggest:

"...either sodium or potassium bicarbonate at 3 teaspoons per gallon of water, combined with Sunspray at 2 tablespoons per gallon of water. The bicarbonates eliminated the fungi, but addition of the Sunspray provided a spreader-sticker action that increased its performance."

They also caution: "do not attempt higher concentrations of the solutions, as leaf burn may result. Rain or overhead watering may wash the solution off, reducing its effect."

So be careful out there folks!

-- posted by Cottage_Garden


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