Bonide Garden Rich Aluminum Sulfate, 4 lbs. Ready-to-Use, Lowers pH in Home Garden, Compatible with all Soil Types

I grow medical Cannabis indoors in organic soil with organic nutrients and sometimes soil pH goes off balance and needs to be raised so i use Dolomite Lime powder and when it needs to be lowered I decided to give Aluminum Sulfate a try after doing some research I found out that Aluminum Sulfate can be used in organic setups and it's one of the fastest acting products. So I bought this 4 Lbs bag and didn't know how much to add to i started small at 2g per gallon of soil and after a few tries I was able to determine that the best ratio is 10g per 1 gallon of soil and i was able to lower the soil pH from 7.4 to 6.5 and my plants responded in a positive way and the deficiency went away after 5 days.95% of deficiencies occur because of soil pH imbalance that's why it's very important to have the right products that work every time that you can rely on and this Aluminum Sulfate is 100% one of the products you can definitely rely on.Happy growing 🪴🗣️💨

I used this to turn my hydrangeas blue. It did the trick!

Worked like a charm on two necrotic blueberry bushes. The bag recommends the right amount depending on what you plan to use it on - such as potted plants or several individual plants in-ground or application on a large block of land - so it's relatively "user friendly". My blueberries are in giant containers so I used and amount suggested for that and after maybe 3 rains both plants greened right up. In fact they turned a glossy hunter green and looked better than they ever had. Good stuff at an affordable price.

I have several hydrangea plants in my yard. Researched care on line. This product was recommended for vibrant color enhancement. Just sprinkled it around the bushes and watered it in and the color was deeper and brighter than ever!

I’ve used a different brand of aluminum sulfate to try to turn my hydrangeas blue for the last two years, but all it ever managed was a lavender. After one application (three tablespoons dissolved in a gallon of water) of this brand my hydrangeas are a true blue for the first time! And it only took about one week after application for them to fully turn blue. Very impressed by this product.

I didn’t see any response or results from the use of this product.

Bought to turn my hydrangeas back to blue. They were losing their color. It did work. Would recommend

It worked for me. My baby hydrangea started turning pink, and I was looking for soil acidifier to help. After researching online soil acidifiers and how to approach soil ph tempering, I tried this product. (My starting soil ph was 7). The hydrangea is quite young, but I took a chance. I applied a very small (not even a 1/4 of recommended) amount, then a couple of weeks later a few more sprinkles, then a month later a tiny tiny bit more. The color slowly turned to lavender then to light blue. I could probably use it again for a deeper blue.I can tell this product works fast, but I used it in small amounts adding more as I went so it didn't burn my plants. It's also loved by my roses and azaleas. I barely dust around them every month or so. They love it!