Use ½ ounce (1 tablespoon) aluminum sulfate per gallon of water to plants that are at least 2 to 3 years old after thoroughly watering the soil first. Too much aluminum sulfate can burn the roots ...

Hydrangeas are popular flowering plants in the South. Find out here how best to care for them and even change their color.

aluminum sulfate and elemental sulfur are two of your safest bets. The former works quickest, while the latter tends to be more affordable. For blueberry plants, Josh suggests using elemental ...