Voluntary Purchasing Group Fertilome 32175 Aluminum Sulfate Soil Conditioner, 4-Pound

Product works as intended adding acid to soil for flowers color change.

Prompt shipping. Thanks!

I have two fairly large hydrangeas in containers. Both started out as a beautiful periwinkle blue, but as they've started to bloom again this spring they've changed to a dusky pink. I read that adding Aluminum Sulfate (which will alter the soil PH) could "mgaically" turn the flowers back to blue. I did a little research and decided to give it a go.I decided to add it in dry form (the way it comes in the package) directly to the soil of the container. I measured out the proper amounts and added it to the soil, avoiding the plant as much as possible (the aluminum sulfate will burn foliage on contact, wet or dry), and then watered the plants thoroughly.I read that it takes a while for the changes to show, and that the color change will ONLY appear on new growth, but within a week of adding the aluminum sulfate to the soil, my hydrangea begin to change into blue. I've attached photos of the color change to this product information so you can see how dramatic the transformation is.However, on the smaller of the two hydrangeas, there was complete failure. The plant shed every single on its leaves in just a few days. The stems and stalks still seem to be alive, so I'm leaving it be and hoping it will grow back- I've had hydrangeas come back from certain death so I'll just wait and see. I'm concerned that my larger hydrangea, the one with the drastic color change, will follow suit, but for now all it's doing is putting on a glorious show of color change.So I would recommend this product, but because it works SO fast (you should see color change in one week), I would add very small doses at a time and proceed with caution. It's not worth losing a gorgeous hydrangea over, but if it's successful, it's pretty amazing.

Great for giving a wider range of color on my hydrangeas

Met my needs

My soil and well water is alkaline. Water is 8.5ph and soil 7.5ph. I started with sulfur but needed quicker results. I used about 1.5 tablespoons per 3 gallon pot and that was probably too much. My runoff water was at 5ph after adding. I would use this product as a last resort or for instant results. I didn't hurt any of my plants and was eventually able to get to 6ph in the soil, which is what I was shooting for. I also added gypsum just in case I added too much aluminum sulfate. Don't quote me on this but I believe gypsum will bond and convert excess aluminum in soils. I recommend aluminum sulfate if you want results in 2 to 3 days. Sulphur if you have more time.

Easy to use, seems to be working.

So, I have 3 hydrangeas at my new home - one old 'Nikko Blue' (came with the house), and 2 new (2 years old) 'LA Dreamin'. Both LA Dreamin came out 100% pink this year (no flowers last year). So boring given they are advertised as pH-insensitive and supposedly multi-color. The Nikko blue was the most awful weak pale-blue (so much so that I am now thinking of ripping it out the ground). I therefore decided to give this product a try this year to see if would change anything currently on show. Firstly, I used a quarter of the amount they suggested on the package, just to be safe. Couple weeks pass and the Dreamin one in the container has pink flowers lined now with green and turquoise (odd, really). The Dreamin in the ground has flowers lined with blue/purple, and no change in Nikko. A week later on and the one in the container now looks really sick (burned leaves, hunched over branches, new flowers dead, old flowers dying), and I am wondering how to save it. I figure either flush it with as much water as I can to wash away the poison, or try and negate it using alkaline garden lime? We will see, but if it keeps on this rate it will be totally dead in another week or 2. I am just thankful I did not use full strength, and opted for caution with 25% of what they said. So far, the ones plugged in the ground are not at deaths door....yet. Fingers crossed this is only a problem for container plants.Not sure why, but they also asked me to star-rate "thickness" and "sheerness". Those are irrelevant concepts to this product.