SKU: ESP98-0182847 Category:


Winchester | 13

In stock


Soil Acidifier by Espoma lowers the pH of soils for optimum growth of acid-loving plants. Great for blueberries and hydrangeas, turning them from pink to blue. Derived from Elemental Sulfur & Gypsum and safer than Aluminum Sulfate.

Apply in Spring and every 60 days until the desired pH is achieved. Wearing gardening gloves during applications is recommended. When applying to Hydrangeas & Blueberries to lower soil pH please follow the guidelines below:

In Ground Plants (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):
New Plantings Established Plants
1-1/4 cups per plant 2-1/2 cups per plant
In Potted Plants:
One tbsp. for each 4″ of pot diameter.
Broadcast Rate:
Apply 12lbs per 100 sq. ft. for each one point reduction in soil pH desired. For heavy clay soils increase rate to 15lbs. Gradual reduction in soil pH is preferred as dramatic reduction can result in stress.
As Fertilizer:
Apply 1/2 cup per 100 sq. ft. (1 tbsp. per plant) around the root zone

Soil Acidifier can be used on all acid loving plants, trees and shrubs including:

Amaryllis Heath Mountain Ash
Andromeda Heather Mountain Laurel
Aster Hemlock Oak
Azalea Holly Pachysandra
Bayberry Huckleberry Phlox
Bleeding Heart Hydrangea Pieris
Blueberry Inkberry Pine
Camellia Juniper Raspberry
Dogwood Leucothoe Rhododendron
Evergreens Lily-of-the-Valley Spruce
Ferns Lupine Strawberries
Fir Magnolia Wood-Sorrel
Gardenia Marigold  

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

Soil Acidifier is available for both in store pickup or delivery.