ph adjuster

Aluminum Sulfate

Premier Tech

  • $8.72
    Unit price per 


Some plants, like peppers and radishes, rhododendrons and hydrangeas prefer slightly more acidic soil than others. Aluminum sulfate can be applied to gently lower the pH of your soil.

To use aluminum sulfate, dilute 3 ml (3/5 tsp) per litre of water for your potted plants every 2-3 weeks. For gardens, rake 1 kg (2.2 lb) evenly over 20 m2 (200 sq. ft.) at a depth of 5-8cm. Or, apply 125 ml (1/2 cup) to medium-sized plants. Application can be repeated every 3-4 weeks. See manufacturer’s website for more directions.


CONTACT US for a Quote on your Bulk Order Needs.


100% Aluminum Sulfate 

Guaranteed minimum analysis 

Aluminum (Al): 17% 

Sulphur (S): 16% 

Neutralizing value (HCI equivalent): 36%

Certified Organic?no
Other Certification?no
Learn More

See ‘Manufacturer's Website’ e.g. Uses, Benefits, Features, Directions, Application Rate, Handling Safety, Content Analysis

Your order will be shipped the same, or next, business day. During sale events and holidays, there may be a slightly longer duration