RE: Acidifying alkaline soil

Years ago I used miracid on with some of my acidic soil loving plants, so I goggled it to see what current thought was on the product and I found this - refers to growing azaleas:
The fastest way to acidify the soil is to use aluminum sulfate (drugstore alum). Dissolve eight ounces of powdered alum in a gallon of water and pour it around your azalea. That will lower the pH by one point.
From http://www.walterreeves.com/gardening-q-and-a/using-miracid- fertilizer/
I think sulfur would last longer but then maybe use this as a supplement as the sulfur degrades. 

Debby Williams

Chicago



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