ALUMINUM SULFATE 3.25lb

Is your soil too alkaline? This granular soil amendment is the key to creating the acidic conditions required by specialty plants. It's your ticket to getting those vibrant, intense blue flowers on your Hydrangeas and deep, healthy color on Blue Spruce and other acid-loving shrubs.

• Best For:
  • Color Change: Pink Hydrangeas you want to turn BLUE.
  • Acid Lovers: Azaleas, Camellias, Gardenias, Rhododendrons, and Blueberries.
  • Evergreen Brightening: Blue Spruce, Pine, and other acid-loving conifers that look dull or pale.
• Key Actionable Steps:
  • How to Apply (General): Simply apply the granules to the soil surface around the base of the plant and water thoroughly to activate and move it into the root zone.
  • How to Apply (Shrubs): Use 1 lb. per 3 ft. of plant height.
  • How to Apply (Alkaline Soil): Use approximately 5 lbs. per 100 sq. ft. to correct overly alkaline soil.
  • Pro Tip (Hydrangeas): Apply early in the spring (around Easter) as new growth begins to allow the aluminum to be absorbed before blooming.