Aluminum Sulfate For Plants is well known. What's the advantages of aluminum sulfate?
Aluminum sulfate lowers the pH of soils that like acidic plants such as azaleas, camellias, gardenias, hemlocks, hollyhocks, cedars, blueberries, azaleas, dogwoods, and turns hydrangeas blue. Suitable for all soil types, including sandy soils, loamy soils and clay soils. Easy to apply, mix aluminum sulfate into the soil and water thoroughly after application. It also helps turn hydrangeas blue.
When the leaves of your blueberries start to turn yellow or your blue hydrangeas stubbornly bloom pink, it's time to test your soil's pH level. When your soil test results show that your soil is more alkaline than your plants like, lower its pH with aluminum sulfate (also called alum). We recommend using a soil tester prior to application to get accurate soil readings.
Aluminum Sulfate
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