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

Excellent

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.

Didn’t seem to change the ph !!