Espoma® Organic® Soil Acidifier
Espoma Organic Soil Acidifier contains elemental sulfur and gypsum to help lower soil pH and turn hydrangeas blue. It is long-lasting and much safer than other acidifiers like aluminum sulfate. Like all Espoma Organic products, no sludges or fillers are ever used. Made in our state-of-the-art solar-powered manufacturing facility, consistency and quality are guaranteed.
Key Benefits:
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Turns hydrangeas blue
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Lowers pH of soils
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Great for blueberries and other berry plants
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Approved for organic gardening
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Safe for people, pets, and planet
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For Use On:
Blueberries, Hydrangeas, Amaryllis, Andromeda, Aster, Azalea, Bayberry, Bleeding Heart, Blueberry, Camellia, Dogwood, Evergreens, Ferns, Fir, Gardenia, Heath, Heather, Hemlock, Holly, Huckleberry, Hydrangea, Inkberry, Juniper, Leucothoe, Lily-of-the-Valley, Lupine, Magnolia, Marigold, Mountain Ash, Mountain Laurel, Oak, Pachysandra, Phlox, Pieris, Pine, Raspberry, Rhododendron, Spruce, Strawberries, Wood-sorrel.
Note: Arborvitae and Boxwood are evergreens that do not require acid soils.
When to Use:
Apply in spring and every 60 days until the desired pH is achieved.
How Much to Use:
Hydrangeas & Blueberries:
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New Plantings: 1-1/4 cups per plant
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Established Plants: 2-1/2 cups per plant
Spread evenly around the plant out to the drip line and water well. Repeat in 60-day intervals until the desired pH or bloom color is achieved.
Potted Plants:
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1 tablespoon for each 4 inches of pot diameter.
Broadcast Rate:
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Apply 12 lbs. per 100 sq. ft. for each one-point reduction in soil pH desired.
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For heavy clay soils, increase the rate to 15 lbs.
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A gradual reduction in soil pH is preferred, as a dramatic reduction can result in stress.
As a Fertilizer:
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Apply 1/2 cup per 100 square feet (1 tablespoon per plant) around the root zone.
Safer than aluminum sulfate due to potential toxic levels of aluminum with continued use of aluminum sulfate.
How to Apply:
Spread evenly around the plant out to the drip line and water well. Repeat in 60-day intervals until the desired pH or bloom color is achieved.
