Hi guys. I hate to bring back a thread from 2016 but I do have a question regarding adding sulfuric acid to water for blueberries. I Purchased blueberries last fall on the clearance deal which was probably not the smartest in the first place. Since then they have struggled. I repotted them this early spring with a mixture of Peat Moss and the natural soil of my yard. The plan was to plant them sometime in June when I have a chance. It was a very busy spring with planting other things.
In hindsight I should have not bought them until after my soil was established and more acidic. But I got them for three dollars a plant and it was really hard to pass up. If they die then I’ll just replace them in the spring.
I got around to planting them last week. I did a mixture of around 40% natural soil which is a clay/loam mixture and mixed with a natural sand soil from another spot in my yard. 30% Peat moss. About 20% shredded pine bark and 10% Ish composted manure( which I hope doesn’t increase my pH. Multiple reviews were online stating It could go one way or the other).
So now to my question. The pH of the soil after mixing everything together is 7.5. I Also added sulfur to it about a cup and a half and mixed it into the ground with a large tiller. Then sprinkled a little on the top and I am covering it with about 1 inch of pine bark. I realize it will take time to lower the pH of the soil naturally. I was reading online that here in Utah we have a lot of carbonates in the water that prevent from lowering the pH especially if we are using secondary water. The pH of the secondary water is also 7 - 7.5.
I have read that many people you sulfuric acid purchased from auto parts stores. The one I have purchased does not specifically state what percentage the sulfuric acid is nor does it list any ingredients other than it states sulfuric acid on the box. I will throw in a photo just so you can see. Is there a generally other additives that are added to battery acid when bought from the store? I would hate to poison the soil or the blueberry plants.
Also if I do use this I know that I am adding little amounts until I achieve a pH that is needed. Should I do this for every watering? And if I do this To a newly planted blueberry plant will it put it in shock? I guess what I am really asking is should I slowly decrease the pH over a few waterings to around five or six in a few weeks or so? Or could I just drastically change it and it would not affect the blueberry plant?
I bought the sulfuric acid from O’Reilly auto parts for about eight dollars.