Safely Lowering PH of Potted Blueberries
I have a number of blueberry plants that I planted a year ago. At that time, I planted some in regular potting soil and added an acidic fertilizer to the top, per the advice of my local nursery, and planted others, after reading about proper blueberry soil, in a mix of pine bark, peat moss, and soil, and added that same acidic fertilizer mixed right into the soil before transplanting.
The plants looked a bit distressed early in the summer, but bounced back and looked healthy by the fall.
I gave that acidic fertilizer away, and now need to figure out a plan for maintaining proper soil and PH this year.
I use only rain water on the blueberries. I have some organic fertilizers that I would like to use, including worm tea, soluble ericoid mycorhizae, kelp and blackstrap mollasses, but I think I will still need to lower the PH.
I've read so many alternative methods of lowing PH my head is spinning. And I have to be even more cautious/conservative, because they are all potted and a little too much of something could have a hugely negative impact. Any advice to gently/safely lower the PH in containers for a home urban orchardist would be greatly appreciated!