Top 7 Best soil acidifier for hydrangeas (2022)

1. Pure Ammonium Sulfate (8 oz.), Eco-Friendly Packaging, Fertilizer & Soil Acidifier, Highest Quality, NO Iron OR Aluminum (Also in 1 lb, 2 lb, 5 lb, & 25 lb)

  • SAFEST AND MOST EFFECTIVE SOIL ACIDIFIER & FERTILIZER.
  • IRON & ALUMINUM FREE.
  • GREENER LEAVES AND BLUER BLUEBERRIES.
  • HELPS LOWER ALKALINITY OF SOIL & GIVE THE PLANTS GREATER STRENGTH & BRIGHTER COLORS.
  • MONEY BACK GUARANTEE: We are confident that you’ll love our products and stand behind every item with a 100% satisfaction guarantee. If you are not satisfied with your purchase return the product for a full refund.

2. Jobe’s Organics 9364 Fertilizer, 6 lb

  • Organic granular for decreasing soils alkalinity; provides acid-loving plants with all natural Sulphur
  • Omri listed for organic gardening by USDA; certified organic means no synthetic chemicals
  • Ideal formula for hydrangeas and blueberries; turns hydrangeas from pink to blue; test soil pH before applying
  • Promotes darker green growth; No harmful chemicals that could burn the plant
  • Easy pour 6 pound bag; apply at planting, reapply 2-3 times a year to maintain desired soil pH

3. Espoma GSUL6 Soil Acidifier, 6-Pound – (2 Pack)

  • Turns hydrangeas blue
  • Lowers the pH of soils for optimum growth of acid-loving plants
  • Derived from Elemental Sulfur & Gypsum
  • Great for blueberries
  • Safer than Aluminum Sulfate

4. Espoma GSUL6 Soil Acidifier, 6-Pound

  • This soil acidifier is an all natural and high purity mineral
  • Can be used both as a plant food and as a soil amendment
  • Lowers the pH of soils and allows acid loving plants to achieve optimum growth
  • Long lasting and highly effective
  • Comes in 6-pound bag
  • This soil acidifier is an all natural and high purity mineral
  • Lowers the pH of soils and allows acid loving plants to achieve optimum growth
  • Long lasting and highly effective
  • Comes in 6-pound bag

5. Pure Aluminum Sulfate (4 oz.), Pure Dry Alum, Soil Acidifier, Hide Tanner, Water Treatment (Also Available in 1 lb & 2 lb)

  • 100% pure aluminum sulfate
  • Lower soil ph for acid loving plants
  • Formula turns hydrangeas blue
  • Designed for plants like azaleas, camellias, gardenias, hemlock holly, & cedar
  • Use to dye & print cloth

6. Espoma UL30 Organic Soil Acidifier Fertilizer, 30 lb,Multicolor

  • Lowers pH to optimum range
  • Package Dimensions: 45.72 H x 10.16 L x 30.48 W (centimetres)
  • Package Weight: 13.676 kilograms
  • Country of Origin : United States

7. Pure Aluminum Sulfate (1 lb.), Pure Dry Alum, Soil Acidifier, Hide Tanner, Water Treatment (Also Available in 4 oz & 2 lb)

  • 100% pure alum
  • Lower soil ph for acid loving plants
  • Formula turns hydrangeas blue
  • Designed for plants like azaleas, camellias, gardenias, hemlock holly, & cedar
  • Use to dye & print cloth

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