Earth Science Fast Acting Sulfur - Instantly Lower pH of Soil & Reduce Nutrient Runoff for Improved Growth & Color - Long Lasting Lawn Care for Acid Loving Plants (2.5lb)

My potted blueberry shrub suffered iron deficiency from low acid levels due to poorly performing “high acid” azalea mix, but after a couple of applications of this product completely bounced back. Worked great and easy to apply.

I purchased the fast acting sulfur to help acidify our azalea bed better than it was by the fertilizer I had used. After it rained, the azaleas started to get better new growth and are back on track to being healthy. I'm happy with the results and will buy this product again.

Gardening on any scale is an art of patience as it takes years to enrich the chain of soil. For years I haven't thrown away leaves and put kitchen scraps out every day. Eventually I began to use only rainwater. These measures led to a fairly balanced PH good enough to grow any vegetable we need. Just in case in the future if we need organic sulfur at low levels using this product at much lower doses may suffice. First we would have to run out of organic matter the worms and insects enjoy as they also produce some sulfur.

Must have pH tester and soil testing to see when you need. I had plants in pots with issues and found alkaline to high. Added this crap and thing improved in a few days. If you are new to planting in pots (recommend terracotta pots for moisture retention) buy pH tester an follow corrections to soil. Major improvements

Worked. Storm killed the pumpkins this year instead :/

We bought a dark blue hydrangea and we were looking for something to lower the ph to help keep a blue color. We used this product when we planted the hydrangea and sure enough when it bloomed, it maintained a beautiful blue.

I needed to adjust my soil for my rhododendrons

I bought a lovely blue hydrangea that slowly started turning green. So I did some research and it sounded like this product was just what I needed. It took 3 weeks for the product to arrive, but there were so many good reviews that I thought it would be worth the wait. Wrong! During the wait, the last of the blue on my hydrangea turned green and a month of frequent feeding has not brought back even a hint of blue. I think they should be required to remove fast-acting from its name. I’m hoping it will start working before summer is over, but at this point it seems like it was a total waste of money.