Soil Acidifier

Where to Buy

Espoma Organic Soil Acidifier contains elemental sulfur & 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. And because it’s made in our state-of-the-art solar powered manufacturing facility, consistency and quality are guaranteed.

Turns Hydrangeas Blue
Lowers pH of Soils
Great for Blueberries & Other Berry Plants
Approved for Organic Gardening
Safe for People, Pets & Planet

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For use on:

Blueberries, Hydrangeas and other acid loving plants

Use on all acid loving plants, trees and shrubs including:

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
Mouuntain Laurel
Oak
Pachysandra
Phlox
Pieris
Pine
Raspberry
Rhododendron
Spruce
Strawberries
Wood-sorrel

Arborvitae & Boxwood are evergreens that do not require acid soils.

When to use:

Apply in Spring and every 60 days until desired pH is achieved

How much to use:

We recommend wearing gardening gloves when feeding your plants

Hydrangeas & Blueberries: Apply in the spring to lower soil pH.
New Plantings: 1-1/4 cups per plant.
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 desired pH or bloom color is achieved.
Potted Plants: One tbsp. for each 4˝ of pot diameter.
Broadcast Rate:
Apply 12 lbs. per 100 sq. ft. for each one point reduction in soil pH desired. For heavy clay soils increase rate to 15 lbs. Gradual reduction in soil pH is preferred as dramatic reduction can result in stress.
As a Fertilizer: 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 desired pH or bloom color is achieved.